期刊
NEUROSCIENCE LETTERS
卷 348, 期 1, 页码 1-4出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/S0304-3940(03)00566-4
关键词
anterior cingulate cortex; action monitoring; performance errors; performance adjustment; monitor lapses; event-related potential; error-related negativity; error-preceding positivity
Previous studies have reported electrophysiological brain activity that is modulated when subjects commit errors in speeded reaction time tasks. This activity is thought to index an action monitoring system in anterior cingulate cortex that signals the need for performance adjustments to minimize the risk of future errors. Consistent with this view, we report here that performance errors are foreshadowed in a modulation of this brain activity on the immediately preceding trial. We propose that this modulation reflects fluctuations in the efficiency of the action monitoring system, which may occasionally compromise subsequent performance and thus comprise a prelude to performance errors. (C) 2003 Elsevier Ireland Ltd. All rights reserved.
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