眼球運動による脱感作と再処理法(EMDR)と自我状態療法を併用した面接課程でみられた脳血流変化〜近赤外分光法(NIRS)による検討〜 Activation of the brain cortex measured by near-infrared spectroscopy during ego state therapy with EMDR in dissociative disorder

Using ego state therapy with eye movement desensitization and reprocessing (EMDR) is one of the treatment protocols for dissociative disorder. However, the mechanism of action in the brain s not yet fully discovered. Therefore, this study was designed to examine relative changes in [oxy-Hb] in the brain during a session of EMDR with ego state therapy by using near-infrared spectroscopy (NIRS). There was a sudden increase in the activation of the right superior temporal sulcus during eye movement. As ego state therapy was introduced, the blood flow decreased. With a specific ego state recalling unpleasant memory, the heart rate accelerated and the brain blood flow increased in the area of the prefrontal cortex and temporal gyrus, whereas EMDR was applied to process the unpleasant memory, the blood flow generally decreased, except for the area of the prefrontal cortex. These results suggest, from the neurobiological studies' perspective, that ego state therapy combined with EMDR appears to be effective in inhibiting the excessive activation of the region adjacent to right superior temporal sulcus in cases of dissociation, and thereby allows processing unpleasant memory which is stored in specific parts,

Journal

Japanese

Tamaki Amano
Akitoshi Seiymama
Motomi Toichi

Amano, T., Seiymama, A., & Toichi, M. (2012, May). [Activation of the brain cortex measured by near-infrared spectroscopy during ego state therapy with EMDR in dissociative disorder]. Japanese Journal of EMDR Research & Practice, 4(1), 18-28. Japanese