Francine Shapiro Library: EMDR Bibliography

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1. Choi, K. M., Min, J. A., Park, G. H., Lee, S.-H., & Chae, J.-H. (2011). The effects of horizontal eye movement on mental health indices and psychophysiological activities in healthy subjects. Korean Journal of Biological Psychiatry, 18(3), 148-158.

Language: English

Format: Journal

Abstract:
Objectives: The eye movement (EM) has been reported to play a role in enhancing the retrieval of episodic memories and reducing effects of fearful episodes in the past and worries for the futures. However, it is still unclear in the mechanism of EM in normal subjects. We examined the horizontal eye movement (HEM) effect using an aiding apparatus on mental health indices including negative and positive psychological factors, and psychophysiological measures such as heart rate variability and quantitative electroencepaholography (qEEG) in healthy subjects.
Methods: Twenty eight healthy subjects were recruited and randomly allocated into two groups : active HEM group and control group. The active HEM group conducted the HEM training with usual stress management audio-intervention using the apparatus inducing eye movement once a day for 14 days. The control group also conducted the same training once a day for 14 days, however, the saccadic eye movement was not included in this training. Psychological measurements, neurocognitive function tests, heart rate variability measurement and qEEG were conducted before and after the training in both groups.
Results: In the active HEM group, sleep status using Sleep Quality Scale (SQS) positive factors significantly increased after the training. By contrast, scores on the negative items of Psychological Well-Being Scale (PWBS), and negative items of the Life Orientation Test-Revised (LOT-R) were significantly decreased after the training. The percentage of delta amplitude (1-3 Hz) in qEEG significantly decreased after the HEM training. The percentage of alpha amplitude (8-12 Hz) significantly increased after HEM training. The change of delta amplitude in the active HEM group was positively correlated with the change of sleep satisfaction of Visual Analogue Scale (VAS), and the change of alpha amplitude was negatively correlated with depression of VAS, anxiety of VAS and Beck Anxiety Inventory (BAI).
Conclusions: The HEM training improved sleep quality and well-being, and sense of optimism. The HEM training also increased alpha amplitude and decreased delta amplitude in qEEG. The qEEG changes were well correlated with subjective improvement of mental health indices in healthy subjects. These results suggest some evidences that HEM training using the apparatus that induces EM would be helpful in improving subjective mental health in healthy subjects. Further study with larger samples size would be needed.

Keywords: Horitzontal Eye Movements  

2. Lee, H., Yum, M. K., Kim, S. H., Lee, Y. J., & Kim, D. (2008). Effect of horizontal eye movements on the heart rate variability after exposure to a fear-inducing film clip. Korean Journal of Biological Psychiatry, 15(1), 35-45.

Language: Korean

Format: Journal

Abstract:
Objectives: There has been a continued debate regarding the role of eye movements in Eye Movement Desensitization and Reprocessing (EMDR). This study examined the possible autonomic effect of horizontal eye movements after being exposed to fearful stimuli. Methods: Fifty two healthy adult women were randomly allocated to eye movement or eye fixed groups after watching a five minute fear-inducing film clip. ECG was recorded during the resting state, after watching the clip, and the treatment. A spectral power analysis of the heart rate variability was performed. As the variables violated the rule of normal distribution and the number in each group is small the non-parametric test was used. Results: Overall, we did not find the differences between the groups in both time and frequency domains. Some minor differences found were not consistent with results from previous studies. Conclusions: Effect of eye movement on autonomic nervous system during fear desensitization was not supported in this experiment. Further study with other psychophysiological measures is needed to understand the role of eye movements in treatment of traumatic memory.

Keywords: Autonomic Nervous System  Eye Movements  Eye Movements  Females  Fear  Film Clip  Heart Rate Variability  Horitzontal  Korean