期刊
COGNITIVE BRAIN RESEARCH
卷 9, 期 2, 页码 121-124出版社
ELSEVIER
DOI: 10.1016/S0926-6410(99)00046-4
关键词
mental rotation; event-related potentials; right hemisphere; topography; electroencephalogram; neurophysiology
Mental rotation is a task performed when subjects are requested to determine whether two stimuli presented in turn have the same shape (congruency) or a mirror-image shape (incongruency) regardless of any difference in orientation. We compared event-related potentials during mental rotation tasks with narrow and wide angular disparities between the two stimuli to identify electrophysiologic correlates of mental rotation. When angular disparity was wide, a prominent negative component arose 438 ms after the second stimulus. A statistically significant difference detected between amplitudes of the negative components under narrow- and wide-angle conditions was maximal in the right parietal region, suggesting that processing of mental rotation is a right parietal dominant function. (C) 2000 Elsevier Science B.V. All rights reserved.
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