Francine Shapiro Library - EMDR Bibliography Links
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1. Maxfield, L. (2003, September). A working memory explanation for the effects of EMs in EMDR. In N. Smyth (Chair), Recent research evaluating the role of eye movements in EMDR. Presentation at the annual meeting of the EMDR International Association, Denver.
Language: English
Format: Conference
Abstract:
Research has consistently demonstrated that performance is degraded when participants engage in two simultaneous tasks that require the same working memory resources. This study tested predictions from working memory theory to investigate the effects of eye movement (EM) on the components of autobiographical memory. In two experiments, 24 and 36 participants, respectively, focused on negative memories while engaging in three dual-attention EM tasks of increasing complexity. Compared to No- EM, Slow-EM and Fast-EM produced significantly decreased ratings of image vividness, thought clarity, and emotional intensity, and the more difficult Fast-EM resulted in larger decreases than did Slow-EM. The effects on emotional intensity were not consistent, with some preliminary evidence that a focus on memory-related thought might maintain emotional intensity during simple dual-attention tasks (Slow-EM, No-EM). The findings of our experiments support a working memory explanation for the effects of EM dual-attention tasks on autobiographical memory. Implications for understanding the mechanisms of action in EMDR are discussed.
Keywords: EMs Eye Movements Working Memory
Accuracy Verified: Yes
2. Trobisch-Lutge, S. (2010, July). "I am a consequential damage of detention" - Protreacted non-determinability in the reconstruction of traumatic experiences in the descendants of victims of political persecution byt the SED dictatorship in the GDR. Symposium (Samin Karim, Chair) conducted at the 1st EMDR Asia Conference, Bali, Indonesia.
Language: English
Format: Conference
Abstract:
The descendants of the political persecution by the SED dictatorship in the GDR are in many ways involved in the history
of the persecution of their parents. 20 years after the “Wende” the reconstruction of parental distress is distinguished by
a high degree of protracted non - determinability. The descendants own traumatic experiences often join fragmented,
unsettling memory segments of the parental generation. Confusing persecution practices of the Stasi have often caused
grave personal uncertainties and as a consequence, have spread doubts until today about the reliability of autobiographical
memories. Internal decision making and processing while living under the conditions of a dictatorship - which included how
to deal with their own children, and the external influences of the persecuted parental generation are, from the viewpoint
of the descendants, difficult to distinguish from each other. A successful EMDR treatment is - in case of the emotional
distress of the descendants of political traumatised people - connected to a process of resolving perplex memory contents. Perpetrator-victim-collusions, which are often found in affected families, add to a concatenation of cumulative traumatic
events. The non - determinability in the reconstruction of traumatic experiences cause the formation of traumatic complexes
which negatively influence future events in the life of the descendants. Based on interview details of a qualitative study
with descendants of victims of political persecution by the SED dictatorship in which the possibilities of handling the more
difficult determination of initial traumatic events are discussed. By means of this the author clarifies the central themes of a
disconcerting reconstruction of the victim’s parental and own biography.
Keywords: GRD Political Persecution SED Dictatorship Victims
Accuracy Verified: Yes
3. van den Hout, M., Muris, P., Salemink, E., & Kindt, M. (2001). Autobiographical memories become less vivid and emotional after eye movements. British Journal of Clinical Psychology, 40(2), 121-130. doi:10.1348/014466501163535.
Language: English
Format: Journal
Abstract:
Objectives: To test (1) whether eye movements during retrieval of emotional memories are followed by less vividness and less emotionality of future recollections, (2) whether this effect, if present, is stronger than the effects of a control activity (finger tapping), (3) whether the alleged effects of tapping and eye movements are stronger than a no-movement, control condition (mere imagery), (4) whether reductions in vividness and emotionality after eye movements (and finger tapping) are specific to negative memories or also occur in the case of positive memories. Method: 60 healthy volunteers recalled either positive or negative memories and scored the vividness and emotionality of the recollections. Next, memories were recalled whilst the participant was performing rapid eye movements, finger tapping, or not performing a dual task. Then participants were asked to recall the event again and to rate its vividness and emotionality. Results: Compared to finger tapping and the no-dual-task condition, recollections after eye movements made future recollections less vivid. After eye movements, but not after the other interventions, negative memories became less negative, and positive memories became less positive. Conclusion: The findings show that eye movements not only reduce vividness and emotionality of memories during the eye moving, but also affect future recollections, during which no eye movements are made. Some theoretical explanations are discussed. As to clinical implications, it is suggested that if there is a role for eye-movement-based treatments, it is very limited. [Author Abstract]
Keywords: Adolescents Cognitive Processes College Students Dutch Exposure Therapy Memory Impairment Posttraumatic Stress Disorder PTSD Survivors Treatment Effectiveness Young Adults
Accuracy Verified: Yes
4. Christman, S., & Garvey, K. (2001, June). Bilateral eye movements reduce cortical activation asymmetries. Presentation at the 2001 EMDR International Association Conference, Austin, TX.
Language: English
Format: Conference
Abstract:
Alternating left-right eye movements (EMs) have been shown to enhance episodic memory recall (Christman & Garvey, 2000). In turn, enhanced recall of episodic, or autobiographical, memories has been linked to increased interhemispheric interaction (Christman & Propper, 2001; Propper & Christman, 1997). Since leftward versus rightward EMs induce right versus hemisphere activation, respectively (Bakan & Svorad, 1969), bilateral EMs may facilitate interhemispheric interaction by balancing hemispheric activation levels. In other words, asymmetries in cortical activation may impair interhemispheric communication. Christman and Garvey (2000), however, demonstrated only that bilateral EMs enhance episodic memory performance; they did not directly measure hemispheric activation. To test this hypothesis directly, participants were administered two behavioral tests that are sensitive to variations in hemispheric activation. The Chimeric Faces Test (Levy, Heller, Banich, & Burton, 1983) involves mirror-image pairs of faces, with one smiling hemiface and one neutral hemiface, presented under conditions of free viewing. Participants are asked to judge which member of a pair looks happier. Right versus left hemiface biases are associated with relative increases in left versus right hemispheric activation. Line bisection tasks also tap into hemispheric activation, with leftward versus rightward bisection errors reflecting increased right versus left hemisphere activation. Bisection tasks, however, are also influenced by premotor asymmetries (e.g., Luh, 1995), and thus represent a less pure measure of hemispheric activation.
METHODS Participants performed blocks of chimeric face and line bisection trials. They then engaged in 30 seconds of alternating left-right saccades (2 eye movements per second). Participants then performed a second block of trials for both tasks.
RESULTS Results showed that behavioral asymmetries in the chimeric face task were significantly reduced after the EMs (p<.029). This supports the hypothesis that bilateral EMs reduce hemispheric activation asymmetries. Performance on line bisection task, however, was unaffected by EMs (F<1), perhaps reflecting the fact that this task is a less direct measure of hemispheric activation.
DISCUSSION These results provide further insight into mechanisms underlying EMDR therapy used for PTSD patients. Reduction in hemispheric activation asymmetry arising from bilateral EMs employed in the current study (and in EMDR) may enhance interhemispheric communication. This interpretation is consistent with Ramachandran (1995), who showed that vestibular stimulation (inducing optokinetic nystagmus and resulting in involuntary left-right EMs) reduces the denial of deficit found in anosagnosia patients.
Ramachandran (1995) suggested that the procedure benefits the hypoaroused right hemisphere, bringing its activation level up to par with the left hemisphere. Similarly, EMs used in EMDR may balance hemispheric activation levels, in turn enhancing interhemispheric communication and retrieval of episodic memories.
Keywords: Bilateral Stimulation Eye Movements
Accuracy Verified: Yes
5. Brewin, C. R. (2001, April). A cognitive neuroscience account of posttraumatic stress disorder and its treatment. Behaviour Research and Therapy, 39(4), 373-393. doi:10.1016/S0005-7967(00)00087-5.
Language: English
Format: Journal
Abstract:
Recent research in the areas of animal conditioning, the neural systems underlying emotion and memory,
and the effect of fear on these systems is reviewed. This evidence points to an important distinction between
hippocampally-dependent and non-hippocampally-dependent forms of memory that are differentially affected
by extreme stress. The cognitive science perspective is related to a recent model of posttraumatic stress
disorder, dual representation theory, that also posits separate memory systems underlying vivid reexperiencing
versus ordinary autobiographical memories of trauma. This view is compared with other accounts in
the literature of traumatic memory processes in PTSD, and the contrasting implications for therapy are
discussed. 2001 Elsevier Science Ltd. All rights reserved.
Keywords: Review Posttraumatic Stress Disorder PTSD
Accuracy Verified: Yes
6. Kristjánsdóttir, K., & Lee, C. W. (2011). A comparison of visual versus auditory concurrent tasks on reducing the distress and vividness of aversive autobiographical memories. Journal of EMDR Practice and Research, 5(2), 34-41. doi:10.1891/1933-3196.5.2.34.
Language: English
Format: Journal
Abstract:
This study investigated the benefits of eye movement similar to that used in eye movement desensitization and reprocessing (EMDR) on reducing the vividness and emotionality of negative autobiographical memories. It was hypothesized, based on the working memory model, that any task that disrupts working memory would reduce the vividness and emotionality of distressing memories. In addition, it was predicted that the more visual a memory, the greater the reduction in vividness by a concurrent visual task over an auditory task (counting). Thirty-six nonclinical participants were asked to recall an unpleasant autobiographical memory while performing each of three dual-attention tasks: eye movement, listening to counting, or control (short exposure). Results showed that vividness and emotionality ratings of the memory decreased significantly after eye movement and counting, and that eye movement produced the greatest benefit. Furthermore, eye movement facilitated greater decrease in vividness irrespective of the modality of the memory. Although this is not consistent with the hypothesis from a working memory model of mode-specific effects, it is consistent with a central executive explanation. Implications for enhancing exposure treatment for posttraumatic stress disorder (PTSD) are discussed.
Keywords: Autobiographical Memory Counting Method Eye Movement Vividness Working Memory
Accuracy Verified: Yes
7. Maxfield, L. (2008). Considering mechanisms of action in EMDR. Journal of EMDR Practice and Research, 2(4), 234-238. doi:10.1891/1933-3196.2.4.234.
Language: English
Format: Journal
Abstract:
This special issue of the Journal of EMDR Practice
and Research contains a number of articles that address
preliminary issues related to these complex
questions. There are two research studies: a study
investigating the physiological effects of EM (Sack
et al.) and a study evaluating the effect of EM on the
components of autobiographical memory (Maxfi eld
et al.) . There are several articles by researchers who
have summarized their fi ndings and provided a theoretical
perspective on related issues (Lee; Propper &
Christman; Sondergaard & Elofsson; Stickgold). Two
theoretical articles propose neurobiological and other
mechanisms of action (Bergmann; Solomon & Shapiro
). All these articles make a real contribution to our
conceptualizations of EMDR mechanisms. It is our
hope and intention that this issue will stimulate thinking,
and provide ideas and models for future research,
with the expectation that fi ndings will help to guide
and direct clinical practice. (Excerpt)
Keywords: Editorial Mechanism of Action
Accuracy Verified: Yes
8. Eidhof, M. B. (2012). The contribution of emotion to the effects of EMDR. Universiteit Utrecht, Utrecht, Netherlands.
Language: English
Format: Dissertation/Thesis
Abstract:
Until now, the effects of Eye Movement Desensitization and Reprocessing (EMDR), has been best explained by Working Memory (WM) theory. Research on the effects of EMDR has always concerned emotional memory, even though the WM account does not consider the emotional element in EMDR. Insights from neuroscience about emotion and its role in the consolidating of stimuli have led to questions that WM theory cannot address. Therefore, the present study introduces the WM/emotion theory on EMDR, which complements WM theory by incorporating knowledge about emotion and its expected role in EMDR treatment. WM/emotion theory expects emotion to play an important role in EMDR treatment, because the re-experiencing of emotion during the recall of an (traumatic) emotional memory seems to enhance (re)consolidation of the ‘blurred’ (as a result of taxing the WM) memory. If this is true, it means EMDR treatment would only affect memories with high emotional charge, and EMDR would be less effective with neutral memories. To test this hypothesis, an experiment was conducted in which negative emotional- and neutral memories of participants were treated with a lab version of EMDR (recall + eye movements (Recall+EM’s)) or a control intervention (Recall-only). It was expected that after Recall + EM’s the reduction of the vividness (and emotionality) would be larger for emotional memories than for neutral memories.It was found that after Recall+EM’s only the vividness (and emotionality) of emotional memories was reduced. The results of the present study suggest that emotion is a crucial element in EMDR treatment and knowledge about the workings of EMDR should be revised according to WM/emotion theory.
Keywords: Autobiographical Memories Consolidation Emotion Negative Memories Neutral Memories Reconsolidation Vividness Working Memory
Accuracy Verified: Yes
9. Littel, M. (2013, April). De rol van emotionaliteit op de effectiviteit van EMDR [The role of emotionality in the effectiveness of EMDR]. In Onderzoek track 1 and 2. Presentatie op Het congres EMDR Vereniging EMDR Nederland, Nijmegen, Nederland.
Language: Dutch
Format: Conference
Abstract:
Als tijdens het ophalen van een autobiografische herinnering een andere taak wordt uitgevoerd die het werkgeheugen belast, zoals het maken van oogbewegingen, wordt de herinnering waziger terug opgeslagen: de levendigheid en emotionaliteit van de herinnering neemt af. Dit fenomeen kan verklaren waarom EMDR zo goed werkt als behandeling voor PTSD. Al het onderzoek dat tot nu toe gedaan is naar de effecten van oogbewegingen op herinneringen maakte gebruik van emotionele (positieve/negatieve) herinneringen. In de huidige presentatie zal worden ingegaan op de rol van deze emotionaliteit op de effectiviteit van EMDR.
Uit onderzoek blijkt dat emotionele gebeurtenissen beter en gedetailleerder in het geheugen worden opgeslagen dan neutrale gebeurtenissen. Dit gebeurt als gevolg van verhoogde emotionele arousal, ofwel verhoogde afgifte van diverse stoffen in het brein, met als belangrijkste noradrenaline. Als noradrenaline wordt geblokkeerd met medicatie worden emotionele gebeurtenissen namelijk even slecht onthouden als neutrale.
Ook tijdens het ophalen van emotionele herinneringen ontstaat er emotionele arousal. En het blokkeren van noradrenaline na het ophalen van een emotionele herinnering zorgt ervoor dat deze minder intens wordt terug opgeslagen in het geheugen. Emotionaliteit zorgt dus voor betere geheugen (re)consolidatie.
De vraag is nu of het feit dat de in EMDR opgehaalde herinneringen emotioneel geladen zijn belangrijk is voor de effectiviteit van EMDR. En zo ja, zorgt de emotionele arousal die vrijkomt er dan voor dat de wazig-gemaakte herinneringen beter worden opgeslagen in het geheugen? Of werkt het op een andere manier?
In de huidige presentatie zullen de resultaten worden besproken van een studie waarin onderzocht is of ook levendige neutrale herinneringen, net als emotionele herinneringen, door oogbewegingen minder levendig kunnen worden. Voorts zullen plannen besproken worden voor een studie naar oogbewegingen waarin emotionele arousal gemanipuleerd wordt. Ook zullen wetenschappelijke en klinische implicaties worden besproken.
If during the retrieval of autobiographical memories another task that taxed working memory, such as making eye movements, the reminder is stored back blurred: the vividness and emotionality of the memory decreases. This phenomenon may explain why EMDR works so well as a treatment for PTSD. All the research done so far has been on the effects of eye movements made use of emotional memories (positive / negative) memories. In the current presentation will discuss the role of emotionality on the effectiveness of EMDR.
Studies show that emotional events better and more detailed in the memory than neutral events. This happens due to increased emotional arousal, or increased release of various substances in the brain, the main noradrenaline. If norepinephrine is blocked with medication emotional events are remembered because as bad as neutral.
During the retrieval of emotional memories creates emotional arousal. And blocking norepinephrine after getting an emotional memory makes it less intense back stored in memory. Emotionality thus provides better memory (re) consolidation.
The question now is whether the fact that the EMDR retrieved emotionally charged memories are important for the effectiveness of EMDR. And if so, will the emotional arousal released sure the blurry-made memories are better stored in memory? Whether it works in a different way?
In the current presentation, the results are discussed from a study which investigated is whether vivid memories neutral, like emotional memories, by eye movements may be less vivid. Further plans will be discussed for a study of eye movements in which emotional arousal is manipulated. Also, scientific and clinical implications are discussed.
Keywords: Emotionality
Accuracy Verified: Yes
10. Schubert, S. (2010, July). The efficacy and psycho physiological correlates of dual-attention tasks in EMDR. Poster presented at the 1st EMDR Asia Conference, Bali, Indonesia.
Language: English
Format: Conference
Abstract:
Methods: Sixty-two non-clinical
participants with negative autobiographical memories received a single EMDR session that involved fixed or varied rate eye
movements, or exposure without eye movements. Subjective units of distress and vividness of the memory were recorded at
pre-treatment, post-treatment, and 1 week follow-up. EMDR-with eye movements led to greater reduction in distress (SUDs)
than EMDR-without eye movements. Psycho physiological measures were continuously recorded throughout each session.
Results: Heart rate decreased significantly when eye movements began; skin conductance decreased during eye movement
sets; heart rate variability and respiration rate increased significantly as eye movements continued; and orienting responses
were more frequent in the eye movement than no-eye movement condition at the start of exposure. Conclusion: These
findings indicate that eye movements in EMDR are beneficial, and are coupled with distinct psycho physiological changes
that may aid in the processing of negative memories. Implications for clinical practice, directions for future research, and the
importance of building bridges between East & West whilst conducting EMDR research will also be discussed.
Keywords: Dual Attention Poster Physiological Correlates
Accuracy Verified: Yes
11. Schubert, S. (2010, July). The efficacy and psychobiological correlates of dual-attention task. Presentation at the 1st EMDR Asia Conference, Bali, Indonesia.
Language: English
Format: Conference
Abstract:
The study being presented aimed to investigate the psycho physiological correlates and the effectiveness of different dualattention
tasks used during eye movement desensitisation and reprocessing (EMDR). Sixty-two non-clinical participants
with negative autobiographical memories received a single EMDR session that involved fixed or varied rate eye movements,
or exposure without eye movements. Subjective units of distress and vividness of the memory were recorded at pretreatment,
post-treatment, and 1 week follow-up. EMDR-with eye movements led to greater reduction in distress (SUDs)
than EMDR-without eye movements. Psycho physiological measures were continuously recorded throughout each session.
Heart rate decreased significantly when eye movements began; skin conductance decreased during eye movement sets;
heart rate variability and respiration rate increased significantly as eye movements continued; and orienting responses were
more frequent in the eye movement than no-eye movement condition at the start of exposure. These findings indicate that
eye movements in EMDR are beneficial, and are coupled with distinct psycho physiological changes that may aid in the
processing of negative memories. Implications for clinical practice, directions for future research, and the importance of
building bridges between East & West whilst conducting EMDR research will also be discussed.
Keywords: Dual Attention Psychophysiological Correlates
Accuracy Verified: Yes
12. Schubert, S. J., Lee, C. W., & Drummond, P. D. (2011, January). The efficacy and psychophysiological correlates of dual-attention tasks in eye movement desensitization and reprocessing (EMDR). Journal of Anxiety Disorders, 25(2011), 1-11. doi:10.1016/j.janxdis.2010.06.024.
Language: English
Format: Journal
Abstract:
This study aimed to investigate the psychophysiological correlates and the effectiveness of different dual-attention tasks used during eye movement desensitization and reprocessing (EMDR). Sixty-two non-clinical participants with negative autobiographical memories received a single session of EMDR without eye movements, or EMDR that included eye movements of either varied or fixed rate of speed. Subjective units of distress and vividness of the memory were recorded at pre-treatment, post-treatment, and 1 week follow-up. EMDR-with eye movements led to greater reduction in distress than EMDR-without eye movements. Heart rate decreased significantly when eye movements began; skin conductance decreased during eye movement sets; heart rate variability and respiration rate increased significantly as eye movements continued; and orienting responses were more frequent in the eye movement than no-eye movement condition at the start of exposure. Findings indicate that the eye movement component in EMDR is beneficial, and is coupled with distinct psychophysiological changes that may aid in processing negative memories.
Keywords: Eye Movements Autobiographical Memory Psychophysiology Orienting Response
Accuracy Verified: Yes
13. Walker, N. (2009, June). EMDR and the autobiographical self. Presentation at the annual meeting of the EMDR Europe Association, Amsterdam, the Netherlands.
Language: English
Format: Conference
Keywords: Autobiographical Self
Accuracy Verified: Yes
14. Hornsveld, H. K., Landwehr, F., Stein. W., Stomp, M. P. H., Smeets, M. A. M., & van den Hout. M. A. (2010). Emotionality of loss-related memories is reduced after recall plus eye movements but not after recall plus music or recall only. Journal of EMDR Practice and Research, 3(4), 106-112. doi:10.1891/1933-3196.4.3.106.
Language: English
Format: Journal
Abstract:
Numerous studies have shown that eye movements during recall of negative memories reduce their emotionality.
We investigated whether these findings can be extended specifically to negative memories of loss.
Sixty undergraduate students participated and recalled a negative autobiographical memory of loss and
performed—in counterbalanced order—three types of tasks: recall-plus-eye-movements, recall-only, and
recall-plus-relaxing-music. Recall-plus-music was added to investigate whether reductions in emotionality
are associated with relaxation. Levels of emotionality, relaxation, and concentration were assessed before
and after each stimulus condition. Participants reported a greater decline in emotionality and concentration
after eye movements in comparison to recall-only and recall-with-music. It is concluded that eye
movements are effective when negative memories pertain to loss and grief, suggesting possibilities for
treatment intervention in individuals suffering from complicated grief.
Keywords: Eye Movements Grief Loss Mechanism of Action Relaxation Working Memory Grief
Accuracy Verified: Yes
15. Barrowcliff, A. L., Gray, N. S., Freeman, T. C. A., & MacCulloch, M. J. (2004, June). Eye-movements reduce the vividness, emotional valence and electrodermal arousal associated with negative autobiographical memories. Journal of Forensic Psychiatry and Psychology, 15(2), 325–345. doi:10.1080/14789940410001673042.
Language: English
Format: Journal
Abstract:
The aim of this study was to examine the effect of eyemovements
on subjective and psychophysiological measures of arousal and
distress associated with positive and negative autobiographical memories.
These memories were ‘brought-to-mind’ whilst engaging in eye-movement or
eyes-stationary conditions in a counterbalanced within subjects design, with
pre and post eye-condition subjective ratings of emotional valence and image
vividness. Participants also rated current symptomatology associated with
negative memories using the Impact of Events Scale. Engagement in eye-movements
compared to the eyes-stationary condition resulted in significant
reductions on measures of vividness and emotional valence for both positive
and negative autobiographical memories. Reductions in electrodermal arousal
were only observed when engaging in eye-movements following elicitation of
the negative memory. This effect was observed independently of symptom
severity.
Keywords: Eye Movements
Accuracy Verified: Yes
16. Pagani, M. (2010, June). Gray matter density is associated with EMDR outcome in PTSD patients. In Research. Symposium conducted at the annual meeting of the EMDR Europe Association, Hamburg, Germany.
Language: English
Format: Conference
Abstract:
There is converging evidence of gray matter (GM) structural alterations in different limbic structures in Post-Traumatic Stress Disorder patients. Eye Movement Desensitization Reprocessing (EMDR) is currently used to treat PTSD but its neurobiological implications are still unknown. The aim of this study was to evaluate GM density in PTSD relation to trauma load, and to assess the GM differences between responders (R) and non-responders (NR) to EMDR therapy.
Structured clinical interviews for DSM-IV Axis I Disorders were carried out before and after EMDR treatment. Those who no longer fulfilled the DSM-IV criteria for PTSD were classified as R and those who still met the diagnostic criteria of PTSD after treatment were classified as NR. Two scales 0f self-related Trauma Antecedent Questionnaire (‘trauma and neglect’ TAQ-, and ‘resilience factors’ TAQ+), were administered to assess lifelong trauma load and resilience. Magnetic Resonance Imaging (MRI) scans 10 R and of 5 NR were compared before therapy by means of an optimized Voxel-Based Morphometry (VBM) analysis as implemented in SPM. For group analysis, a threshold of p<0.05 corrected for multiple comparisons at cluster level and an uncorrected threshold of p <0.001 at voxel-level were used.
NR subjects showed no significant differences nor in TAQ- scores neither in TAQ+ as compared to R(t=0.140, p+0.891). The contract R>NR exhibited a significant GM lower density in NR as compared to R in three different cluster: the first bilaterally located over posterior cingulate (Brodmann Areas, Bas 23 and 31); the second centered over the left precentral (BA 4), middle and medial frontal gyri (BA 6); the third including anterior insula (BA 13), and the complex anterior parahippocampal gyrus/amygdala, over the right hemisphere.
To our knowledge, this is the first study investigating GM alterations with a VBM approach in a sample of PTSD patients respond and non responding to EMDR therapy. Posterior cingulate, parahippocampal and insular lower GM concentrations have been found to relate to responsiveness to EMDR therapy suggesting a high vulnerability of these structures to the effects of stress and trauma. These regions are well known to be implicated in processes such as: integration, encoding and retrieval of autobiographical and episodic memories; emotional processing, interoceptive awareness and sefl-referential conscious experience. Thus, our study supports lower GM densities in limbic and paralimbic cortices as a potential structural basis for memory and dissociative dysfunction in PTSD. Using such methodological approach can contribute to better understand the neurostructural basis for traumatic responses and their treatment.
The goals for the audience are: 1. To understand the methodological research principles; 2. To be updated on neurobiological research in EMDR; 3. to be informed on the neural basis of EMDR.
Keywords: Gray Matter Posttraumatic Stress Disorder PTSD Research Symposium
Accuracy Verified: Yes
17. Gunter, R. W. (2007, 2008). How eye movements affect unpleasant memories: Support for a working memory account. University of Calgary, Canada. AAT NR44352.
Language: English
Format: Dissertation/Thesis
Abstract:
Eye movement desensitization and reprocessing can reduce ratings of the vividness and emotionality of unpleasant memories--hence it is commonly used to treat posttraumatic stress disorder. The present experiments compared three accounts of how eye movements produce these benefits. Participants rated unpleasant autobiographical memories before and after eye movements or an eyes stationary control condition. In Experiment 1, eye movements produced benefits only when memories were held in mind during the movements, and eye movements increased arousal, contrary to an investigatory-reflex account. In Experiment 2, horizontal and vertical eye movements produced equivalent benefits, contrary to an interhemispheric-communication account. In Experiment 3, two other distractor tasks (auditory shadowing, drawing) produced benefits that were negatively correlated with working memory capacity. These findings support a working-memory account of the eye movement benefit in which the central executive is taxed when a person performs a distractor task while attempting to hold a memory in mind.
Keywords: Eye Movements Working Memory
Accuracy Verified: Yes
18. Gunter, R. W., & Bodner, G. E. (2008, August). How eye movements affect unpleasant memories: Support for a working-memory account. Behaviour Research and Therapy, 46(8), 913-931. doi:10.1016/j.brat.2008.04.006.
Language: English
Format: Journal
Abstract:
Eye movement desensitization and reprocessing can reduce ratings of the vividness and emotionality of unpleasant memories—hence it is commonly used to treat posttraumatic stress disorder. The present experiments compared three accounts of how eye movements produce these benefits. Participants rated unpleasant autobiographical memories before and after eye movements or an eyes stationary control condition. In Experiment 1, eye movements produced benefits only when memories were held in mind during the movements, and eye movements increased arousal, contrary to an investigatory-reflex account. In Experiment 2, horizontal and vertical eye movements produced equivalent benefits, contrary to an interhemispheric-communication account. In Experiment 3, two other distractor tasks (auditory shadowing, drawing) produced benefits that were negatively correlated with working-memory capacity. These findings support a working-memory account of the eye movement benefits in which the central executive is taxed when a person performs a distractor task while attempting to hold a memory in mind.
Keywords: Autobiographical Memory Eye Movements Psychotherapy Working Memory
Accuracy Verified: Yes
19. Chang, S. H., & Lee, Y. H. (2006, September). Interference of eye movements during recollections changes the vividness and emotionality of autobiographical memories?: A crucial test of possible EMDR mechanisms. Presentation at the 36th Annual Congress of the EABCT (European Association for Behavioural and Cognitive Therapies), Paris, France. (NSC 93-2413-H-002-002-).
Language: English
Format: Conference
Keywords: Autobiographical Memories Eye Movements
Accuracy Verified: Yes
20. Chang, S. H. & Lee, Y. H. (2006, September). Interference of spontaneous eye movements during recollections changes the vividness and emotionality of autobiographical memories?: A crucial test of possible EMDR mechanisms. Presentation at the 36th annual congress of the EABCT (European Association for Behavioural and Cognitive Therapies), Paris, France.
Language: English
Format: Conference
Abstract:
This study examined possible therapeutic mechanism of eye movements in Eye
Movement Desensitization and Reprocessing (EMDR). Several studies have reported
that bilateral eye movements during imagery could decrease vividness and
emotionality of recollections. This study proposed a hypothesis, that was, the
reduction of recall was due to the interference of spontaneous eye movements
including conjugate lateral eye movements (CLEMs). 110 undergraduate students
(47 men, 63 women) recalled two positive and two negative memories (the CLEMs of
these memories were recorded by a digital camera at the same time) and rated their
vividness and emotionality of the recollections. Next, participants recalled the
memories while they were engaging in five between-group conditions (bilateral eye
movements, left gaze, right gaze, central gaze, and mere imagery condition). Then
participants recalled the event again and rated its vividness and emotionality. The
results showed that the bilateral eye movements made autobiographical memories less
vivid and less emotive, while mere image increased the vividness and emotionality of
autobiographical memories (ps < .05). Importantly, there was only one significant
Valence × Time interaction effect (p < .05) in the left gaze condition. It showed that
right hemisphere involved more negative emotions than positive, whereas left
hemisphere involved no differences between negative and positive emotions. With
regard to CLEMs, there were no different lateral eye movements between negative
and positive memories. The study supported the idea that bilateral eye movements
during imagery could decrease vividness and emotionality of recollections, and that
interfering spontaneous eye movements changed vividness and emotionality of
autobiographical memories. The role of eye movements in the EMDR was discussed.
Keywords: Autobiographical Memory CLEM Eye Movements Gaze Direction
Accuracy Verified: Yes
21. Chang, S. H. & Lee, Y. H. (2005, August). Interfering CLEM reduces vividness and emotionality of autobiographical memories. Presentation at the 2005 American Psychological Association Annual Convention, Washington, DC C. (NSC 93-2413-H-002-002-).
Language: English
Format: Conference
Abstract:
Research background: It was noted that when people recalled an
emotional event, there is a spontaneous eye movements during retrieval
of memory, known as conjugate lateral eye movements (CLEM). Eye
movements during mental imagery are not epiphenomenal but assist the
process of image generation (Hebb, 1968; Brandt & Stark, 1997). If
restricted to a fixed point, then the image of recall is impaired (Laeng &
Teodorescu 2002). These findings might shed light on why bilateral eye
movements during imagery could decrease vividness and emotionality of
recollections.
Objectives: Based on the above findings, this study examined possible
therapeutic mechanism of eye movements in Eye Movement
Desensitization and Reprocessing (EMDR; Shapiro, 1989, 1995, 2001),
of which eye movement was a crucial treatment component. Specifically,
the hypothesis that interfering CLEM via introducing bilateral eye
movements or a fixed position could reduce vividness and emotionality of
autobiographical memories was examined in the present study. Further,
whether there are different CLEMs (more rightward in positive and more
leftward in negative) during retrieval of positive and negative memories
was also investigated.
Method: Seventeen healthy volunteers recalled two positive and two
negative memories and rated their vividness and emotionality of the
recollections. Next, memories were recalled whilst the participant was
performing either bilateral eye movements (interference of CLEM) or
mere image condition (non-interference of CLEM). Then participants
were asked to recall the event again and to rate its vividness and
emotionality. Vividness and emotionality ratings were analyzed using a 2
(EM condition: bilateral eye movement vs. mere image) × 2 (valence of
memory: positive vs. negative) × 2 (time: before vs. after the intervention)
repeated measures analysis of variance (ANOVA). During the first and
last recall of each memory CLEM were recorded by a digital camera. To
examine the effect of CLEM during recollections on emotionality and
vividness of autobiographical memories, eye movements in each recall
were counted into percentage time of eye gaze in three regions (leftward,
middle, rightward), instead of counting the first lateral eye movement as
used by the traditional method.
Results: Compared to mere image condition, recollections after bilateral
eye movements made subsequent recollections less vivid and less
emotive, while the opposite was true for mere image condition.
Regarding vividness, the 2 × 2 × 2 ANOVA showed that there was a
significant condition × time interaction. None of the other interactions or
main effects reached significance. Simple main effect indicated that the
change in vividness was significant in the mere image condition, but not
in the eye movement condition. As to emotionality, the three way
ANOVA showed that there was also a significant condition × time
interaction. None of the other interactions or main effects reached
significance. Simple main effect indicated that the change in emotionality
was significant in the mere image condition, and in eye movement
condition. Concerning percentage of gaze direction (left, right) in positive
and negative memories, pair t test showed that there was a significant
right gaze difference between positive and negative memories, and
approached significant left gaze difference between positive and negative
memories. With regard to CLEM, negative memories showed less right
gazes and more left gazes than positive memories.
Conclusion:The bilateral eye movements made autobiographical
memories less vivid and less emotive than mere image condition, while
mere image increased the vividness and emotionality of autobiographical
memories. Further, there is different CLEM for negative and positive
memories. While the hypothesis that interference of CLEM reduced the
vividness and emotionality of autobiographical memories was confirmed,
the role of eye movement in the EMDR was discussed and future research
possibilities are proposed.
Keywords: Autobiographical Memory CLEM Eye Movements Gaze Direction
Accuracy Verified: Yes
22. Hermans, H. P., & de Putter, M. (2012). Is een toevoeging van een aspect uit de contraconditionering aan EMDR zinvol? [Is an addition of one aspect of the counter-conditioning to EMDR useful?]. Utrecht, Nederlands: Universiteit Utrecht.
Language: Dutch
Format: Dissertation/Thesis
Abstract:
Eye Movement and Desensitization Reprocessing (EMDR) is een beproefde methode
voor de behandeling van posttraumatische stressstoornis (PTSS). Het
verklaringsmechanisme van EMDR lijkt de werkgeheugentheorie te zijn. De
werkgeheugentheorie voorspelt dat het belasten van het werkgeheugen tijdens het
ophalen van een nare herinnering, de emotionaliteit van de herinnering doet afnemen.
Het huidige onderzoek betrekt een aspect vanuit de contraconditionering bij
oogbewegingen. Participanten werden ingedeeld in 3 condities: positief, negatief en
neutraal. Elke participant voerde een tweetal reactietijd taken uit op de computer,
waarvan één met een stilstaande stip en één met een bewegende stip. Daarnaast haalde
elke participant 2 negatieve autobiografische herinneringen op, tijdens het ophalen
van één herinnering keken participanten naar een stilstaande stip, terwijl bij de andere
herinnering een bewegende stip gepresenteerd werd. Op het beeldscherm werd –
afhankelijk van de conditie – een positieve, neutrale of negatieve foto als achtergrond
geselecteerd om te kijken of de valentie van aangeboden foto’s het effect van
oogbewegingen beïnvloeden. De reactietijd taken bieden inzicht in welke mate
oogbewegingen een belasting voor het werkgeheugen vormen. De resultaten tonen
significant tragere reactietijden wanneer participanten oogbewegingen moesten
maken. Op het gebied van emotionaliteit is er eveneens een significant effect van
oogbewegingen gevonden. De narigheid van de opgehaalde herinnering nam –
onafhankelijk van conditie - af wanneer participanten oogbewegingen maakten.
Uitkomsten van het huidige onderzoek vormen een bevestiging van de
werkgeheugentheorie. Het verwachtte effect van valentie is uitgebleven, vermoedelijk
doordat participanten de valentie van de foto’s niet goed meekregen. Adequaat
vervolg onderzoek zal moeten uitwijzen of een toevoeging aan EMDR vanuit de
contraconditioneringstheorie zinvol is.
Eye Movement Desensitization and Reprocessing (EMDR) is a proven method for the treatment of post traumatic stress disorder (PTSD). The declaration mechanism of EMDR seems to be working memory theory. The working memory theory predicts that taxing working memory during retrieval of a bad memory, the emotionality of the memory decreases. The present study involves an aspect from the counter-conditioning at eye movements. Participants were divided into 3 conditions: positive, negative and neutral. Each participant performed a two reaction tasks on the computer, one with a stationary dot and one with a moving dot. In addition, each participant took 2 negative autobiographical memories, while retrieving a reminder to participants watched a stationary spot, while the other memory a moving dot was presented. On the screen was - depending on the condition - a positive, neutral or negative picture as background selected to see if the valence of pictures presented the effect of eye movements influence. The response functions provide insight into the extent to which eye movements constitute a burden on the working memory. The results show significantly slower reaction times when participants had to make eye movements. In the area of emotionality is also a significant effect of eye movements found. The misery of the retrieved memory Rose - regardless of condition - off when participants made eye movements. Results of the present study are a confirmation of the working memory theory. The expected effect of valence failed to materialize, probably because participants the valence of the pictures are not good afterworld. Adequate follow-up study is needed to determine whether an addition to EMDR from the contralateral conditioning theory makes sense.
Keywords: Counter Conditioning Memory Theory
Accuracy Verified: Yes
23. Pagani, M., Flumeri, F., Salmaso, D., Nardo, D., Sanchez-Crespo, A., Danielsson, A. M., Brolin, F., Jacobsson, H., Larsson, S. A., & Hogberg, G. (2008, October). Neurobiological changes in post traumatic stress disorder following treatment with eye movement desensitisation reprocessing. Presentation at the European Association of Nuclear Medicine Congress, Munich, Germany, European Journal of Nuclear Medical and Molecular Imaging, 35(Supp 2).
Language: English
Format: Conference
Abstract:
Background: Only few studies have reported functional or structural modifications in Post Traumatic Stress Disorder (PTSD) patients following pharmacological treatment or psychotherapy. Eye movement desensitization and reprocessing (EMDR) is a novel eclectic psychotherapy utilising, among other techniques, relaxation and safe place exercises, cognitive restructuring, future projections, and imaginal exposure of the trauma combined with sensory stimulation. The aim of the study was to analyse the differences in regional cerebral blood flow (rCBF) distribution and in brain volumetry before and after EMDR therapy.
Subjects and Methods: Fifteen subjects with chronic PTSD following occupational health hazards were treated with five sessions of EMDR. They were assessed with psychometric scales and diagnostic interviews before and directly after treatment. SPECT, during administration of an individualised trauma script, was performed using 99mTc-HMPAO. After EMDR, the subjects were subdivided into responders (R, n=10) and non-responders (NS, n=5), based on the absence or presence, respectively, of full PTSD diagnosis. SPECT and volumetric data (MRI) analyses were carried out by Statistical Parametric Mapping (SPM2). SPECT and MRI data were covaried by age and by time elapsed from trauma to SPECT. SPECT data were further covaried by the amount of grey matter normalised by the total intracranial volume.
Results: Immediate significant post-treatment changes towards normality in all scales measuring psychological status were found in responders. As compared to NR, R showed a significantly decreased tracer uptake in parieto-occipital (Brodmann Area, BA, 37, fusiform gyrus) and in primary visual cortex (BA17) and in the hippocampus (p<0.001). The opposite comparison highlighted an increased tracer uptake in left frontal cortex (BA 44; p<0.05). Structural grey matter modifications were found in visual, posterior cingulate and parieto-temporal cortex, paralleling the functional changes.
Conclusion: The positive EMDR outcome corresponded to increased 99mTc-HMPAO uptake in the left dorsolateral frontal cortex, processing attention and self confidence and exerting an inhibitory effect on the amygdala whose firing is supposed to be responsible for PTSD. After successful treatment significant decreases were found in primary visual cortex, processing images of traumatic memories and flashbacks; in fusiform gyrus, processing the memories of faces, bodies and words and in the hippocampi, involved in episodic and autobiographical memories. Volumetric changes paralleled the ones in tracer uptake in all regions Taken as a whole these findings suggest that the positive clinical outcome following EMDR therapy causes functional and structural neurobiological changes towards normality.
Keywords: Brain Volumetry Neurobiological Changes Posttraumtic Stress Disorder PTSD rCBF Regional Cerebral Blood Flow
Accuracy Verified: Yes
24. Pagani, M., DiLorenzo, G., Verardo, A. R., Nicolais, G., Monaco, L., Lauretti, G., Russo, R., Niolu, C., Ammaniti, M. Fernandex, I., & Siracusano, A. (2012). Neurobiological correlates of EMDR monitoring - an EEG study. PLoS ONE, 7(9), 1-12. doi:10.1371/journal.pone.0045753.
Language: English
Format: Journal
Abstract:
Background: Eye Movement Desensitization and Reprocessing (EMDR) is a recognized first-line treatment for psychological trauma. However its neurobiological bases have yet to be fully disclosed.
Methods: Electroencephalography (EEG) was used to fully monitor neuronal activation throughout EMDR sessions including the autobiographical script. Ten patients with major psychological trauma were investigated during their first EMDR session (T0) and during the last one performed after processing the index trauma (T1). Neuropsychological tests were administered at the same time. Comparisons were performed between EEGs of patients at T0 and T1 and between EEGs of patients and 10 controls who underwent the same EMDR procedure at T0. Connectivity analyses were carried out by lagged phase synchronization.
RESULTS: During bilateral ocular stimulation (BS) of EMDR sessions EEG showed a significantly higher activity on the orbito-frontal, prefrontal and anterior cingulate cortex in patients at T0 shifting towards left temporo-occipital regions at T1. A similar trend was found for autobiographical script with a higher firing in fronto-temporal limbic regions at T0 moving to right temporo-occipital cortex at T1. The comparisons between patients and controls confirmed the maximal activation in the limbic cortex of patients occurring before trauma processing. Connectivity analysis showed decreased pair-wise interactions between prefrontal and cingulate cortex during BS in patients as compared to controls and between fusiform gyrus and visual cortex during script listening in patients at T1 as compared to T0. These changes correlated significantly with those occurring in neuropsychological tests.
Conclusion: The ground-breaking methodology enabled our study to image for the first time the specific activations associated with the therapeutic actions typical of EMDR protocol. The findings suggest that traumatic events are processed at cognitive level following successful EMDR therapy, thus supporting the evidence of distinct neurobiological patterns of brain activations during BS associated with a significant relief from negative emotional experiences.
Keywords: EEG Study Neurobiological Correlates
Accuracy Verified: Yes
25. Pagani, M. et al (2012, June). Neurobiological correlates of EMDR monitoring - An EEG study [Correlatos neurobiológicos y monitorización EMDR – un estudio con EEG]. Presentation at the annual meeting of the EMDR Europe Association, Madrid, Spain.
Language: English
Format: Conference
Abstract:
Background:
Eye
Movement
Desensitization
and
Reprocessing
(EMDR)
is
a
recognized
first-‐line
treatment
for
psychological
trauma.
However
its
neurobiological
bases
have
not
been
disclosed
yet.
Methods:
Electroencephalography
was
used
for
the
first
time
to
fully
monitor
neuronal
activation
during
whole
EMDR
sessions
including
the
autobiographical
script.
Ten
clients
with
major
psychological
trauma
were
investigated
during
the
first
EMDR
session
and
during
the
last
one
performed
after
processing
the
index
trauma.
Comparisons
between
the
EEG
of
the
first
and
last
EMDR
session
and
between
the
EEG
of
the
clients
at
the
first
session
and
those
of
10
controls
undergoing
the
same
EMDR
procedure
were
performed.
Results:
During
both
script
listening
and
bilateral
stimulation
EEG
showed
significantly
higher
activity
in
the
prefrontal
limbic
cortex
(Brodmann
Areas,
BA
9-‐
10)
at
the
first
as
compared
to
the
last
EMDR
session.
The
opposite
comparison
showed
a
shift
of
the
prevalent
activity
towards
temporal,
parietal
and
occipital
cortical
regions
(BAs
20,
21,
22,
37,
17,
18,
19)
with
leftward
lateralization.
The
comparison
between
the
10
clients
and
the
10
controls
confirmed
the
maximal
activation
in
the
limbic
cortex
in
the
clients
before
processing
the
trauma.
Conclusions:
The
implemented
methodology
made
possible
to
image
for
the
first
time
the
specific
activations
associated
with
the
therapeutic
actions
contemplated
by
EMDR.
The
findings
suggested
cognitive
processing
of
traumatic
events
following
successful
EMDR
therapy
supporting
the
evidence
of
distinct
neurobiological
patterns
of
brain
activations
during
bilateral
ocular
stimulation
associated
with
a
significant
relieve
from
negative
emotional
experiences.
Antecedente
Teórico:
La
desensibilización
y
reprocesamiento
por
el
movimiento
ocular
(EMDR)
es
una
reconocida
primera
línea
para
el
tratamiento
del
trauma
psicológico.
Sin
embargo
sus
bases
neurobiológicas
no
han
sido
descifradas
todavía.
Método:
La
electroencefalografía
ha
sido
usada
por
primera
vez
para
monitorizar
completamente
la
activación
neuronal
durante
sesiones
enteras
de
EMDR
incluyendo
el
guión
autobiográfico.
10
Clientes
con
traumas
psicológicos
mayores
fueron
investigados
durante
la
primera
sesión
de
EMDR
y
durante
la
última
después
del
procesamiento
del
trauma
raíz.
Las
comparaciones
entre
los
EEG
de
la
última
y
primera
sesión
y
las
de
EEG
de
los
clientes
en
la
primera
sesión
y
10
controles
realizando
el
mismo
procedimiento
de
EMDR
fueron
realizadas.
Resultados:
Durante
ambos
procesos,
la
escucha
y
la
estimulación
bilateral,
el
EEG
mostró
una
actividad
significativamente
mayor
en
el
córtex
límbico
prefontral
(Brodmann
Areas,
BA
9-‐10)
al
principio
comparadas
con
la
última
sesión
de
EMDR.
La
comparación
opuesta
muestra
un
cambio
en
la
actividad
fundamental
entre
las
regiones
corticales
temporal,
parietal
y
occipital
(BAs
20,
21,
22,
37,
17,
18,
19)
con
lateralizaciones
hacia
la
izquierda.
La
comparación
entre
los
10
clientes
y
los
controles
confirman
la
activación
máxima
de
la
corteza
límbica
en
los
clientes
antes
de
procesar
el
trauma.
Conclusiones:
La
metodología
usada
hizo
posible
visualizar
la
neuroimagen
por
primera
vez
de
las
activaciones
cerebrales
asociadas
con
las
acciones
terapéuticas
que
acontecen
en
el
EMDR.
Los
hallazgos
sugieren
que
el
procesamiento
cognitivo
de
los
eventos
traumáticos
seguidos
de
una
terapia
EMDR
exitosa
apoyan
la
evidencia
de
un
patrón
neurobiológico
diferenciado
en
las
activaciones
del
cerebro
durante
la
estimulación
ocular
bilateral
asociados
con
una
acumulación
un
experiencias
emocionales
negativas.
Keywords: EEG Study
Accuracy Verified: Yes
26. van der Schoot, O. M. (2010, Juli). Oogbewegingen en imaginatie: Een kritische toets van de werkgeheugen theorie bij EMDR [Eye movements and imagination: A critical test of working memory theory in EMDR]. Utrecht, Nederlands: Universiteit Utrecht.
Language: Dutch
Format: Dissertation/Thesis
Abstract:
‘Eye movement desensitization and reprocessing’ (EMDR), een veel gebruikte behandelingbij posttraumatische stressstoornis, kan de helderheid en emotionaliteit van plezierige enonplezierige herinneringen reduceren. Tevens kunnen visuele beelden van gevreesdetoekomstige gebeurtenissen worden gedegradeerd. Verondersteld wordt dat EMDR zijnwerking verleent door manipulatie van het gelimiteerde werkgeheugen. In de huidige tweeexperimenten wordt deze veronderstelling nogmaals kritisch getoetst aan de hand van eenoogbewegingen, alleen ophalen (controle) en imaginatie conditie. Er werd verondersteld datwanneer imaginatie gebruik zou maken van dezelfde processen als EMDR (manipulatie vanhet werkgeheugen) er spiegelbeeldige effecten zouden moeten optreden. In experiment 1 werdgebruik gemaakt van neutrale herinneringen (huiskamers). In de oogbewegingen en alleenophalen conditie werd geen effect gevonden. In de imaginatie conditie nam de compleetheiden waarheidsgetrouwheid van de herinnering toe. In experiment 2 werd gebruik gemaakt vaneen Reactie Tijden (RT) taak om te objectiveren of de oogbewegingen en de imaginatiedaadwerkelijk het werkgeheugen taxeren: zowel oogbewegingen als imaginatie vertraagdende RT, maar oogbewegingen het meest, hetgeen suggereert dat oogbewegingen het meestewerkgeheugen taxeert. Vervolgens werd experiment 1 herhaald, echter ditmaal met specifiekepositieve autobiografische herinneringen. In de drie condities werd geen effect gevonden.Huidig onderzoek biedt geen ondersteuning voor de werkgeheugentheorie. Echter, geen vande andere prominente theorieën over het werkingsmechanisme van EMDR kan het uitblijvenvan effect in huidig onderzoek verklaren. Verder onderzoek naar EMDR zal nodig zijn om debehandeling verder te kunnen optimaliseren en het werkingsmechanisme beter te kunnenbegrijpen.
"Eye Movement Desensitization and Reprocessing (EMDR), a widely used behandelingbij posttraumatic stress disorder, the clarity and emotion of pleasant memories enonplezierige reduced. It may also feared future events of visual images are degraded. It is assumed that EMDR effect gives through manipulation of the limited memory. In the present two experiments were critically tested this assumption on the basis of one eye movements, only to retrieve (control), and imagery condition. It was assumed datwanneer imagination would use the same processes as EMDR (manipulation of working memory) are mirrored effects should arise. In experiment 1 was used neutral memories (homes). In the retrieval condition, eye movements and all found no effect. In the imagination condition heathlands took the complete veracity of the increased memory. Experiment 2 was used asunder Reaction times (RT) task to objectify or eye movements and working memory imaginatiedaadwerkelijk value: both eye movements and imagination-using RT slowed, but the most eye movements, suggesting that eye movements appraises the most memory. Experiment 1 was then repeated, this time with specific positive autobiographical memories. In the three conditions, no effect gevonden.Huidig research does not support the working memory theory. However, no Vande other prominent theories on the mechanism of EMDR uitblijvenvan effect may explain current research. Further research on EMDR debehandeling will be needed to further optimize the mechanism and to better understand.
Keywords: Imagination Posttraumatic Stress Disorder PTSD Vividness Working Memory
Accuracy Verified: Yes
27. Pagani, M., Di Lorenzo, G., Verardo, A. R., Nicolais, G., Lauretti, G., Russo, R., Cogolo, P., Niolu, C., Ammaniti, M., Siracusano, A., & Fernandez, I. (2012, January). P-1162 Pre- intra- and post-treatment EEG imaging of EMDR - neurobiological bases of treatment efficacy. European Psychiatry, 27(Supplement 1), 1-1. doi:10.1016/S0924-9338(12)75329-4.
Language: English
Format: Journal
Abstract:
Aim: Eye Movement Desensitization and Reprocessing (EMDR) is a recognized first-line treatment for psychological trauma. However its neurobiological bases have not been disclosed yet. Methods: Electroencephalography was used for the first time to fully monitor neuronal activation during whole EMDR sessions including the autobiographical script. Nine clients with major psychological trauma were investigated during the first EMDR session and during the last one performed after processing the index trauma. Comparisons between the EEG of the first and last EMDR session and between the EEG of the clients at the first session and those of 9 controls undergoing the same EMDR procedure were performed. Results: During both script listening and bilateral stimulation EEG showed significantly higher activity in the prefrontal limbic cortex (Brodmann Areas, BA 9–10) at the first as compared to the last EMDR session. The opposite comparison showed a shift of the prevalent activity towards temporal, parietal and occipital cortical regions (BAs 20, 21, 22, 37, 17, 18, 19) with leftward lateralisation. The comparison between the 9 clients and the 9 controls confirmed the maximal activation in the limbic cortex in the clients before processing the trauma. Conclusions: The implemented methodology made possible to image for the first time the specific activations associated with the therapeutic actions contemplated by EMDR. The findings suggest cognitive processing of traumatic events following successful EMDR therapy supporting the evidence of distinct neurobiological patterns of brain activations during bilateral ocular stimulation associated with a significant relieve from negative emotional experiences.
Keywords: EEG Imaging Neurobiology
Accuracy Verified: Yes
28. Kreyer, A. K., & Egon, S. (2008, June). Physiological effects of eye movements of different speeds and eye fixation during engagement in negative autobiographical memories: Experimental research regarding EMDR. Presentation at the annual meeting of the EMDR Europe Association, London, England.
Language: English
Format: Conference
Abstract: The aim of the study was to explore the working mechanism of the bilateral stimulation component in EMDR in relation to current hypotheses. Physiological hypotheses (of orienting response and relaxation response) were tested in an analogous experimental setting. Moreover, the clinical advice to use different stimulation speeds for different phases of EMDR was examined at the autonomic level, exploring two different speeds of eye movements. In a within-subject design 42 female students performed 7 short sets each of rapid eye movements (1 Hz), slow eye movements (0.3 Hz) and eye fixation while engaging in negative autobiographical memories. Order of the tasks was counterbalanced. Electrooculogramm (EOG), electrocardiogramm, electrodermal activity and distal pulswave were recorded continuously. Skin conductance level (SCL), heart rate (HR), heart rate variability (RMSSD) and pulse wave transit time (PWTT) were calculated. Performance of the eye movement tasks were controlled through EOG. All three conditions showed a clear-cut de-arousal at stimulation onset, which was 30 indicated by a decrease in HR and SCL and an increase in RMSSD and PWTT. That means, fast and slow eye movements as well as eye fixation initiated a moderate, but clear relaxation response with increased parasympathetic and reduced sympathetic activity. These results suggest that the speed of eye movements do not influence autonomic functions. Furthermore, the results of this study do not support most of the current hypotheses regarding the working mechanism of the bilateral stimulation in EMDR. Alternative explanations are discussed
Keywords: Autobiographical Memories Research
Accuracy Verified: Yes
29. Hopchet, M., & Detournay, F. (2012, June). Preliminary study on the effects of simultaneous application of two types of stimulations (eye movements and tactile stimuli) on psychophysiological autoreported symptoms in the treatment of negative autobiographical memories [Estudios preliminares sobre los efectos de la aplicación simultanea de dos tipos de estimulación (movimientos oculares y táctiles) en sintomatología psicofisiológica autoinformada en el tratamiento de recuerdos autobiográficos negativos]. Presentation at the annual meeting of the EMDR Europe Association, Madrid, Spain.
Language: English
Format: Conference
Abstract:
Negative autobiographical memories are effectively treated using EMDR
with patients making eye movements during the recall of negative
autobiographical memories. While several studies have measured the effects of
different types of stimulations, we are not aware of any research assessing the
combined effects of two different stimulations applied simultaneously during the
recall of the event.
For this preliminary study involving 15 adult patients from both sexes, 4 EMDR
counselor therapists measure 17 symptoms of the list proposed by Weimann
(1968)). Each patient is evaluated before, during and at the end of each session.
We control the effect of the sequence of one versus two types of stimulations by
assigning each patient to both conditions but in a random way: (a) first target first
session with one type of stimulation following with a second target first session,
including two types of stimulation; (b) the inversed sequence. We compare the
mean level intensity of each symptom (within factor) between one type vs. two
types of stimulations (between factor) using the Anova and the t- Student tests.
We hypothesize that an attenuation of intensity of the stress symptoms occurs
when the patient is treated simultaneously with two types of bilateral stimulation
(eye movements and tactile stimuli), compared to one (eye movements).
The paper presents preliminary data, as well as a discussion of the results in the
light of the theory of the working memory (Andrade et al.1997) and the
reassurance reflex model of EMDR proposed by MacCulloch and Feldman (1996).
Los
recuerdos
autobiográficos
negativos
son
tratados
con
efectividad
usando
el
EMDR
con
pacientes
a
través
del
movimiento
ocular
de
ojos
durante
el
acceso
al
recuerdo
negativo
autobiográfico.
Mientras
muchos
estudios
han
medido
dos
tipos
diferentes
de
estimulación,
no
estamos
al
corriente
de
ninguna
otra
investigación
que
informe
de
los
efectos
combinados
de
los
dos
tipos
de
estimulación
aplicada
simultáneamente
durante
este
acceso
al
recuerdo
del
evento.
En
este
estudio
preliminar
contamos
con
los
datos
de
15
pacientes
adultos
de
ambos
sexos,
4
consultores
EMDR
midieron
17
síntomas
de
la
lista
propuesta
por
Weimann
(1968).
Cada
paciente
era
evaluado
antes,
durante,
y
al
final
de
cada
sesión.
Controlamos
los
efectos
de
una
secuencia
en
función
de
los
2
tipos
de
estimulación,
asignando
a
cada
paciente
ambas
condiciones
pero
de
manera
aleatorizada:
(a)
Primer
recuerdo
Diana,
primera
sesión
con
un
tipo
de
estimulación
seguido
de
un
Segundo
recuerdo
de
la
primera
sesión
incluyendo
dos
tipos
de
estimulación;
(b)
invertimos
la
secuencia
anterior.
Comparamos
la
media
del
nivel
de
intensidad
de
cada
síntoma
(dentro
del
factor)
entre
un
tipo
y
dos
tipos
de
estimulación
(entre
factores)
usando
cálculos
estadísticos
de
Anoia
y
una
t-‐Student
para
los
resultados.
Nuestra
hipótesis
es
que
ocurrirá
una
atenuación
de
los
síntomas
de
estrés
cuando
el
paciente
es
tratado
simultáneamente
con
dos
tipos
de
estimulación
bilateral
(movimientos
oculares
y
estímulos
táctiles),
comparados
con
la
de
un
solo
tipo
(Movimientos
oculares).
Este
artículo
presenta
el
análisis
preliminar
de
los
datos,
así
como
la
discusión
de
los
resultados
en
línea
con
la
teoría
de
la
memoria
de
trabajo
(Andrade
y
cols
1997)
y
la
reafirmación
del
modelo
refractario
del
EMDR
propuesto
por
MacCulloch
y
Feldman
(1996).
Keywords: Autobiographical Memories Bilateral Stimulation Eye Movements Tactile Stimulation
Accuracy Verified: Yes
30. Pagani, M., Di Lorenzo, G., Monaco, L., Niolu, C., Siracusano, A., Verardo, A. R., Lauretti, G., Fernandez, I., Nicolais, G., Cogolo, P., & Ammaniti, M. (2011). Pretreatment, intratreatment, and posttreatment EEG imaging of EMDR: Methodology and preliminary results from a single case. Journal of EMDR Practice and Research, 5(2), 42-56. doi:10.1891/1933-3196.5.2.42.
Language: English
Format: Journal
Abstract:
Electroencephalography (EEG), due to its peculiar time and spatial resolution, was used for the first time to fully monitor neuronal activation during the whole eye movement desensitization and reprocessing (EMDR) session, including the autobiographical script. The present case report describes the dominant cortical activations (Z-score >1.5) during the first EMDR session and in the last session after the client processed the index trauma. During the first EMDR session, prefrontal limbic cortex was essentially activated during script listening and during lateral eye movements in the desensitization phase of EMDR. In the last EMDR session, the prevalent electrical activity was recorded in temporal, parietal, and occipital cortical regions, with a clear leftward lateralization. These findings suggest a cognitive processing of the traumatic event following successful EMDR therapy and support evidence of distinct neurobiological patterns of brain activations during lateral eye movements in the desensitization phase of EMDR.
Keywords: Bilateral Ocular Stimulation Cortical Activation EEG
Accuracy Verified: Yes
31. Martin, N. (2001, July). Research in brief: Eye remember it well: Eye movements affect the vividness of your emotional memories. The Psychologist, 14(7), 376.
Language: English
Format: Magazine
Abstract:
Can eye movement reduce trauma?
eye movement desensitisation and
reprocessing (EMDR) has shown that
people retrieving traumatic events while
making 10–20 lateral eye movements,
experienced less trauma than did those
who simply reported the traumatic event
without eye movement (see article on
EMDR on p. 361). Students who either
looked at a computer screen, tapped
their fingers or followed a symbol across
a computer screen with their eyes also
reported significantly less vivid imagery
of autobiographical events in the eye
movement condition; images we re most
vivid in the control condition. The results
suggest that visuospatial working memory
is disrupted by eye movement, reducing
the vividness of the recollection. However,
EMDR suggests that future recollections of
the event should also be less vivid.
Accuracy Verified: Yes
32. Scarf, M. (2004). Secrets, lies, betrayals: How the body holds secrets of a life and how to unlock them. 1st ed. New York: Random House.
Language: English
Format: Book
Abstract:
Bestselling author Scarf (Intimate Partners; Unfinished Business) explores new therapies that claim to be able to "reprocess" or "detoxify" traumatic memories through physical manipulation of the nervous system. Via accessibly presented neuroscience, Scarf explains how the body stores memories of intensely stressful experiences. A writer rather than a clinician (she's a senior fellow at Yale's Bush Center in Child Development and Social Policy), Scarf generates her data through meeting women subjects in marital distress and exploring their pasts through gentle discussion. Throughout, Scarf weaves her own autobiographical reflections, centered on painful memories of an autocratic father and a negligent mother. Seeking to advance her own emotional well-being, she enters into a reprocessing therapy session and becomes an advocate of the technique; she persuades one of her subjects to try it out, with apparently successful results. Although the physical ailments presented in Scarf's account seem extremely slight, she makes much of a sense of emotional breakthrough and release. Scarf's investigation into the methodology of reprocessing therapies is scientifically limited, yet she does allow us some insights into how they function. Admirers of her work will enjoy her ability to evoke relationship dynamics (including abusive relationships), her seductively flowing style and her emphasis on perceptive readings of life histories. Readers with a serious interest in psychology will find little cutting-edge scholarship here, and some may question why all Scarf's subjects are women.
Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved.
Accuracy Verified: Yes
33. Pagani, M. (2008, Novembre). Sub-strato neurobiologico della sindrome da stress post-traumatico e relativo impatto funzionale e strutturale della terapia con EMDR [Neurobiological substrate of post-traumatic stress syndrome and impact on functional and structural therapy with EMDR]. Presentazione le Applicazioni Cliniche del EMDR Congresso Nazionale, Milano, Italia.
Language: Italian
Format: Conference
Abstract:
Recenti studi hanno dimostrato come la sindrome da stress post-traumatico (PTSD) possa causare nel cervello cambiamenti sia strutturali che funzionali. Studi di imaging funzionale tramite tomografia ad emissione di fotone singolo (SPECT) e ad emissione di positrone (PET) hanno evidenziato significative variazioni del flusso cerebrale in pazienti con PTSD durante la rivisitazione del trauma. A questo proposito sono stati riportati aumenti e diminuzioni di flusso nell’ippocampo, nell’amigdala, nella corteccia prefrontale mediale, nel cingolo anteriore e posteriore e nella corteccia temporale. Il modello prevalente collega i sintomi del PTSD ad una mancata inibizione dell’ amigdala, iperattivata dalla sensazione di incombente minaccia, da parte della corteccia prefrontale. E’ stato anche proposto che i cambiamenti strutturali dell’ippocampo e del cingolo anteriore rivelati dalla risonanza magnetica strutturale (RM) siano causati dalla risposta neuronale allo stress. L’obiettivo delle nostre ricerche e’ stato quello di analizzare la risposta funzionale e le variazioni strutturali in due gruppi di soggetti esposti a trauma occupazionale che hanno sviluppato (S=sintomatici, n=20) o no (NS=non sintomatici, n=27) il PTSD. Una parte dei S (n=16) è stata trattata con EMDR. La diagnosi di PTSD prima e dopo la terapia è stata basata sia sui criteri del DSM-IV sia su vari test neuropsicologici mirati. La SPECT (n=47) e la RM (n=33) sono state eseguite da 3 mesi a sei anni dal trauma e la prima è stata ripetuta dopo EMDR. I sintomi sono stati provocati da uno script individualizzato che ha riportato alla memoria il trauma e durante il quale è stato iniettato il tracciante di flusso cerebrale.
Le analisi eseguite hanno mostrato differenze significative tra S e NS nella risposta del flusso cerebrale allo script. Nei 33 soggetti in cui sono state eseguite sia la SPECT che la RM sono state trovate differenze significative sia funzionali che strutturali nella corteccia temporo-parietale sinistra e nell’ippocampo, regioni nelle quali gli score dei test neuropsicologici correlano significativamente con il flusso cerebrale. Nei soggetti con remissione sintomatologica dopo EMDR (R; n=11) sono state trovate rispetto ai soggetti che non hanno risposto alla terapia (NR; n=5) significative differenze di flusso in 4 aree corticali che processano funzioni deteriorate in corso di PTSD. Diminuzioni di flusso dopo la terapia sono state registrate nei R rispetto ai NR nell’ippocampo, nel giro fusiforme (corteccia parieto-occipitale) e nella corteccia visiva primaria. L’ippocampo è sede della memoria episodica ed autobiografica; il giro fusiforme processa il riconoscimento di volti, dei corpi e delle parole; la corteccia visiva primaria custodisce la memoria visiva degli eventi. La mancata inibizione e/o l’iperattività di queste regioni nel PTSD sono responsabili della rivisitazione patologica figurata e somatica dell’evento traumatico e della presenza di flashback ed immagini allucinatorie. Viceversa la corteccia frontale dorsolaterale ha mostrato un aumento di flusso nei R. Questa regione oltre ad essere deputata ad inibire nel sistema limbico la risposta patologica a stimoli che ricordano l’evento traumatico è essenziale per i processi di attenzione e del “senso di sé”, diminuiti in corso di PTSD e recuperati in seguito alla remissione della malattia. In questi soggetti la RM ha inoltre messo in evidenza il valore predittivo delle dimensioni dell’ippocampo rispetto all’efficacia della terapia con EMDR.
I nostri risultati confermano il coinvolgimento della corteccia temporo-parieto-occipitale nel PTSD e sottolineano il valore delle neuroimmagini sia nello svelare gli effetti neurobiologici dell’EMDR che determinare il valore delle indagini strutturali nel predirne l’efficacia.
Recent studies have shown that the post-traumatic stress syndrome (PTSD) may result in both structural and functional brain changes. Imaging studies using functional Single photon emission tomography (SPECT) and positron emission tomography (PET) shown significant changes in cerebral blood flow in patients with PTSD during revisiting the trauma. In this regard have been reported increases and decreases in flow hippocampus, amygdala, medial prefrontal cortex, the anterior cingulate and posterior and temporal cortex. The dominant model linking the symptoms of PTSD to a no inhibition of 'amygdala hyperactivity disorder by the sense of impending threat by the prefrontal cortex. E 'was also proposed that the structural changes of the hippocampus and
anterior cingulate revealed by structural magnetic resonance imaging (MRI) are caused by the response neuronal stress. The aim of our research and 'was to analyze the response
functional and structural variations in two groups of subjects exposed to occupational trauma that have developed (S = symptomatic, n = 20) or not (NS = non-symptomatic, n = 27) PTSD. Part of S (n = 16) was treated with EMDR. The diagnosis of PTSD before and after the therapy was based on both DSM-IV has on several neuropsychological tests targeting. SPECT (n = 47) and MRI (n = 33) are were performed from 3 months to six years from the trauma and the first was repeated after EMDR. Symptoms were caused by a script individual who reported to the memory of the trauma and during which were injected with a tracer of cerebral blood flow. The analysis performed showed significant differences between S and NS in the response of flow brain to the script. In the 33 subjects in which they were performed both SPECT and MRI were found significant differences in both functional and structural temporo-parietal cortex left hippocampus, regions in which the scores of neuropsychological tests correlate significantly with the flow in the brain. In subjects with symptomatic remission after EMDR (R; n = 11) were found compared with subjects who did not respond to therapy (NR, n = 5) significant differences in flow in 4 cortical areas that process functions deteriorated in the course of PTSD. Decreases in flow after treatment were recorded in R than NR hippocampus, within fusiform (parieto-occipital cortex) and in the primary visual cortex. The hippocampus is the seat of episodic memory and autobiographical, and the processes around the fusiform recognition of faces, bodies and words, the primary visual cortex preserves the memory visual events. The non-inhibition and / or 'hyperactivity of these regions in PTSD are
responsible for pathological figured revisiting the traumatic event and physical and presence of flashbacks and hallucinatory images. Contrast, the dorsolateral frontal cortex has showed an increase of flow in R. This region in addition to being deputies to inhibit the system limbic response to pathological stimuli that recall the traumatic event is essential for processes of attention and the "sense of self, decreased in the course of PTSD and recovered following remission. In these subjects, MRI has also highlighted the predictive value the size of the hippocampus compared the efficacy of EMDR therapy. Our results confirm the involvement of the temporo-parietal-occipital cortex in PTSD and emphasize the value of neuroimaging in revealing both the neurobiological effects of EMDR that determine the value of the structural surveys in predicting effectiveness.
Keywords: Neurobiology Posttraumatic Stress Disorder PTSD
Accuracy Verified: Yes
34. Pagani, M., Lorenzo, Gd., Verardo, A., Nicolais, G., Monaco, L., Niolu, C., Fernandez, I., & Siracusano, A. (2012, March-April). Substrato neurobiologico della terapia con EMDR [Neurobiological correlates of EMDR therapy]. Rivista di Psichiatria,47(2 Supp 1):16S-18S. doi: 10.1708/1071.11734.
Language: Italian
Format: Journal
Abstract:
I EEG in un gruppo di dieci soggetti con grave trauma psicologico trattati con EMDR e in dieci controlli sono stati registrati sia durante l'ascolto del racconto autobiografico del trauma indice (script) e nel corso di una intera sessione EMDR. Gli EEG sono stati eseguiti nuovamente durante l'ultima sessione di EMDR quando i pazienti erano liberi da sintomi. Durante l'ascolto uno script di attivazione prevalente delle regioni limbiche corrispondenti alla corteccia prefrontale e orbitofrontale è stato registrato, essere spiegato come l'eccitazione emotiva durante trauma rivivere nella fase sintomatica. La diminuzione significativa di tali attivazioni durante la fase tardiva asintomatica rappresenta il correlato neurobiologico del recupero. Inoltre, l'evidenza di una significativa attivazione corticale nelle aree temporo-parieto-occipitale, durante l'ultima sessione, suggerisce uno switch del segnale elettrico dominante verso aree corticali con funzione prevalente cognitiva.
The EEGs in a group of ten subjects with major psychological trauma treated with EMDR and in ten controls have been registered both during the listening of the autobiographical narrative of the index trauma (script) and during a whole EMDR session. The EEGs have been performed again during the last EMDR session when patients were free of symptoms. During script listening a prevalent activation of the limbic regions corresponding to prefrontal and orbitofrontal cortex has been registered, being explained as the emotional arousal during trauma reliving at the symptomatic phase. The significant decrease of such activations during the late asymptomatic phase represents the neurobiological correlate of recovery. Moreover, the evidence of significant cortical activation in the parietal-temporo-occipital areas, during the last session, suggests a switch of the dominant electrical signal towards cortical areas with a prevalent cognitive function.
Keywords: Neurobiology
Accuracy Verified: Yes
35. de Heer, E. W., & Hoogeveen, E. M. (2009). Taxing working memory during recall of distressing memories with a counting task and EMDR benefits. Utrecht, Nederlands: Universiteit Utrecht.
Language: English
Format: Dissertation/Thesis
Abstract:
Dit experiment is gebaseerd op de hypothese dat de omvang van de EMDR-effecten kritisch hangt af van de mate waarin het werkgeheugen (WM) is belast tijdens het ophalen. De deelnemers deden herinneren aan pijnlijke herinneringen tijdens het uitvoeren van een van de twee afleidende taken (terugtellend met stappen van 2 of 7), het ene meer, afhankelijk van WM dan de andere. Hoe meer WM was belast, de grotere verlagingen van de levendigheid en emotionaliteit werden verwacht. De uitkomsten werden vergeleken met een controle conditie. Terugtellend met stappen van 2 of 7, terwijl we een verontrustende autobiografisch geheugen in het achterhoofd, verlaagt de emotionaliteit van het geheugen dat met name in vergelijking met het tellen van helemaal geen. De verlaging van de 7's staat, echter niet significant afwijken van de verlaging van de eenvoudige (dwz 2's) staat. Kortingen voor levendigheid werden niet gevonden. Deze resultaten ondersteunen het werkgeheugen account. Er is echter meer onderzoek nodig om de dosis-respons relatie tussen WM-load en EMDR-effecten en tot een beter begrip van de elementaire onderdelen van EMDR te krijgen verklaren.
This experiment is based upon the hypothesis that the magnitude of the EMDR effects critically depends on the degree to which working memory (WM) is taxed during retrieval. Participants did recall distressing memories while performing one of two distracting tasks (counting backwards with steps of 2 or 7); the one more depending on WM than the other. The more WM was taxed, the larger reductions in vividness and emotionality were expected. The outcomes were compared to a control condition. Counting backwards with steps of 2 or 7, while holding a distressing autobiographical memory in mind, decreases the emotionality of that particular memory compared to no counting at all. The reduction in the 7’s condition, however, did not differ significantly from the reduction in the simple (i.e. 2’s) condition. Reductions for vividness were not found. These results do support the working memory account. However, more research is needed to explain the dose-response relation between WM-load and EMDR-effects and to get a better understanding of the elementary components in EMDR.
Keywords: Retrieval Working Memory
Accuracy Verified: Yes
36. Walker, N. (2012, October). Temporal sequencing as a multipurpose aid in preparing for and facilitating EMDR with complex trauma or severe PTSD. Presentation at the at the 4th Autumn EMDR Workshop Conference, Sheffield, UK .
Language: English
Format: Conference
Abstract:
This workshop describes the various uses of chronological autobiographical memory cues (temporal sequencing) to restore the sense of ‘continuity of being’ disrupted by trauma:
1. To facilitate readiness for EMDR processing when a client is avoidant to accessing memory, or is likely to become hyper-aroused, by creating felt distance in time from the time of the trauma to the present.
2. To securely close an incomplete EMDR session.
3. To improve the clients’ present groundedness both in the session, and to improve their general level of groundedness, making them less vulnerable to intrusions and avoidance.
4. To build sufficient ego-strength and empowerment for secure processing and integration of traumatic memory.
Keywords: Complex Trauma Posttraumatic Stress Disorder PTSD Temporal Sequencing
Accuracy Verified: Yes
37. Fernandez, B. R. (2010, December). Through the eyes of a child: A symbolic, narrative journey through complex childhood trauma. Pacifica Graduate Institute, Carpinteria, CA . 1490015.
Language: English
Format: Dissertation/Thesis
Abstract:
This research examines how symbolic expression in the form of written autobiographical stories, dream images, and original art can heal the survivor of complex childhood trauma. Chronic neglect, witnessing and/or experiencing physical and sexual abuse, systematic humiliation, or other terrorizing experiences can lead to psychic fragmentation, disruptions in memory, and other adaptations that can cause lifelong suffering and functional impairment. These trauma sequelae concern psychotherapists and other professionals who treat survivors. Included is a discussion of attachment theory, brain development, memory, and other psychological experiences endured by childhood trauma survivors. Presented is the author's artistic, phenomenological, and hermeneutic engagement with healing such trauma through depth psychology, psychotherapy, and symbolic artistic representations including memoir. There is a focus on the importance of rebuilding self through the piecing together of coherent autobiographical narrative. It includes coverage of stages of recovery and various treatment approaches including EMDR, art therapy, and Jungian dreamwork.
Keywords: Art Autobiographical Stories Dream Images Narration Symbolic Expression
Accuracy Verified: Yes
38. Smeets, M. A. M., Dijs, M. W., Pervan, I., Engelhard, I. M., & van den Hout, M. A. (2012, May). Time-course of eye movement-related decrease in vividness and emotionality of unpleasant autobiographical memories. Memory, 20(4), 346-357. doi:10.1080/09658211.2012.665462.
Language: English
Format: Journal
Abstract:
The time-course of changes in vividness and emotionality of unpleasant autobiographical memories associated with making eye movements (eye movement desensitisation and reprocessing, EMDR) was investigated. Participants retrieved unpleasant autobiographical memories and rated their vividness and emotionality prior to and following 96 seconds of making eye movements (EM) or keeping eyes stationary (ES); at 2, 4, 6, and 10 seconds into the intervention; then followed by regular larger intervals throughout the 96-second intervention. Results revealed a significant drop compared to the ES group in emotionality after 74 seconds compared to a significant drop in vividness at only 2 seconds into the intervention. These results support that emotionality becomes reduced only after vividness has dropped. The results are discussed in light of working memory theory and visual imagery theory, following which the regular refreshment of the visual memory needed to maintain it in working memory is interfered with by eye movements that also tax working memory, which affects vividness first.
Keywords: Emotionality Unpleasant Autobiographical Memories Vividness
Accuracy Verified: Yes
39. Maxfield, J. L. (2003). A working memory analysis of the dual attention component of eye movement desensitization and reprocessing. Lakehead University, Thunder Bay, Ontario Canada. AAT NQ85018.
Language: English
Format: Dissertation/Thesis
Abstract:
This dissertation applied the concepts and predictions of working memory theory to a psychotherapeutic approach, Eye Movement Desensitization and Reprocessing (EMDR). The overview of EMDR included a description of the treatment, theoretical model, empirical studies, and possible mechanisms of action. The overview of working memory included a summary of concepts and theories, and a comprehensive research review. Seven studies that investigated the related effects of eye movements (EMs) were described in detail. Two experiments were conducted to test predictions from working memory research about the effect of EMs on autobiographical memory. In both Experiments, participants identified 3 negative memories and focused on each for 2 minutes, while simultaneously engaging in 1 of 3 divided attention (DA) conditions: an easy EM task (Slow-EM), a difficult EM task (Fast-EM), and a task with no EM (Control). Measures were pre-post ratings of memory-related image vividness, thought clarity, and emotional intensity. In Experiment 2, participants were also randomly assigned to a focus on image-only or image-thought. Memory recall during Control resulted in significant post-condition increases in all measures, except emotional intensity in Experiment 1. Compared to Control, recall during both Slow-EM and Fast-EM produced significantly smaller scores for image vividness and thought clarity, and, in Experiment 2, for emotional intensity. At post-condition, Fast-EM resulted in significantly lower scores than Slow-EM for image vividness in both Experiments and emotional intensity in Experiment 2. There were no differences in outcomes between focus on image-only and on image-thought. Findings of the current experiments supported a working memory explanation for the effects on visual and thought clarity. The competition of resources during simultaneous EM and memory recall reduced memory quality. The greater degradation of memory components resulting from the more difficult condition, Fast-EM, may be attributed to demands made on visuospatial sketchpad resources. The components of each memory appeared to be linked and to show similar patterns of change, within conditions. Reported levels of pre-task emotional intensity did not predict change in thought clarity and image vividness. Finally, a theoretical application of working memory theory to EMDR was presented and recommendations were made for future research. (PsycINFO Database Record (c) 2008 APA, all rights reserved)
Dissertation Abstracts International: Section B: The Sciences and Engineering. 64(10-B), 2004, pp. 5225.
Keywords: Attention Dual Attention Component Empirical Study Eye Movements Short-Term Memory Working Memory
Accuracy Verified: Yes
40. Maxfield, L., Melnyk, W. T., & Hayman, C. A. G. (2008). A working memory explanation for the effects of eye movements in EMDR. Journal of EMDR Practice and Research, 2(4), 247-261. doi:10.1891/1933-3196.2.4.247.
Language: English
Format: Journal
Abstract:
Research has consistently demonstrated that performance is degraded when participants engage in two
simultaneous tasks that require the same working memory resources. This study tested predictions from
working memory theory to investigate the effects of eye movement (EM) on the components of autobiographical
memory. In two experiments, 24 and 36 participants, respectively, focused on negative
memories while engaging in three dual-attention EM tasks of increasing complexity. Compared to No-
EM, Slow-EM and Fast-EM produced significantly decreased ratings of image vividness, thought clarity,
and emotional intensity, and the more difficult Fast-EM resulted in larger decreases than did Slow-EM.
The effects on emotional intensity were not consistent, with some preliminary evidence that a focus on
memory-related thought might maintain emotional intensity during simple dual-attention tasks (Slow-EM,
No-EM). The findings of our experiments support a working memory explanation for the effects of EM
dual-attention tasks on autobiographical memory. Implications for understanding the mechanisms of action
in EMDR are discussed.
Keywords: Eye Movements Mechanism of Action Memory Components Working Memory
Accuracy Verified: Yes