시각작업기억과 지각입력 간 비교 처리 과정에서의 선별적 변화 탐지의 특성

초록

Comparison between visual working memory (VWM) representation and incoming perception has been reported to be rapid and immediate (Hyun, Woodman, Vogel, Niese, & Luck, 2003). The present study further tested if a visual change in an ignored or in other words, a task‐irrelevant feature dimension would be detected while a relevant feature dimension is paid attention for change‐detection. Electrophysiological index of change‐induced shift of attention (e.g., N2pc) indicated that the irrelevant change does not appear triggering the shift of attention to a location of the change. When increased the number of changes however, subjects were more distracted than when there was only a single change. The results indicate that comparison between solid VWM representation and incoming perception occurs in an automatic fashion but can operate selectively in a controlled manner if necessary.

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