EMDRは不快な記憶を脱感作できるのか? ERPによる実証的研究 Does eye movement desensitization and reprocessing (EMDR) desensitization painful memories?: Research using brain-event-related potentials (ERP)

Description

本研究では、EMDRによって不快な記憶が脱感作されるかを、精神生理学的な指標であるP3を用いて検討した。本研究の被験者は41名(女性26名、男性15名)である。まず、重度に不快な記憶をもつ31名の大学生の被験者を3つの群に割り当てた;EMDR群(n=10)では不快な記憶を想起しながら眼球運動を行い、Image群(n=10)では視覚刺激を凝視しながら不快な記憶の想起を行い、 EM群(n=11)では眼球運動のみ行った。軽度に不快な記憶をもつ10名の大学生の被験者を低SUDS(主観的障害尺度)群に割り当て、軽度に不快な記憶を想起しながら眼球運動を行わせた。本実験では、不快な記憶に関連する人物の姓(関連刺激)を刺激に用いて脳波の測定を行った。脳波の測定回数は2回で、眼球運動あるいは視覚刺激を凝視した前後に行った。関連刺激に対して生起したP3の振幅を、眼球運動あるいは視覚刺激を凝視した前後で比較した。実験の結果、EMDR群のP3振幅が有意に低下していた。また、SUDSの値は、 EMDR群と低SUDS群で低下した。この結果は、 EMDRの有効性を示すものといえる。

The present investigation used psychophysiological indices such as P3 to examine whether eye movement desensitization and reprocessing (EMDR) desensitizes people's painful memories. Participants in the study were 41 college students (26 females, 15 males). Of these, the 31 who had highly painful memories were divided into 3 groups: (1) EMDR group (N =10), in which participants moved their eyes while visualizing a painful memory, (2) image group (N =10), in which participants gazed at a fixed visual stimulus while visualizing a painful memory, and (3) eye movement (EM) group (N =11), in which participants only moved their eyes; (4) the 10 participants with less painful memories, as indicated by a low score on a subjective units of distress scale (SUDS), moved their eyes while visualizing less painful memories. The names of persons who evoked painful events for each participant were used as relevant stimuli for 2 EEG recordings, one before and the other after eye movement or gazing at the fixed stimulus. Comparison of P3 amplitudes elicited by the relevant stimuli showed that the P3 amplitudes in the eye movement desensitization and reprocessing group (#1) and the group with low SUDS scores (#4) confirmed the effectiveness of eye movement desensitization and reprocessing.

Format

Journal

Language

Japanese

Author(s)

Shiwa Shiro
Takashi Matsuda
Minori Sasaki

Original Work Citation

Shiro, S., Matsuda, T., & Saski, M. (2004, September). [Does eye movement desensitization and reprocessing (EMDR) desensitization painful memories?: Research using brain-event-related potentials (ERP)]. Japanese Journal of Behavior Therapy, 30(2), 75-86. Japanese

Collection

Citation

“EMDRは不快な記憶を脱感作できるのか? ERPによる実証的研究 Does eye movement desensitization and reprocessing (EMDR) desensitization painful memories?: Research using brain-event-related potentials (ERP),” Francine Shapiro Library, accessed September 27, 2021, https://emdria.omeka.net/items/show/20508.

Output Formats