期刊
NEUROSCIENCE LETTERS
卷 350, 期 2, 页码 101-104出版社
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/S0304-3940(03)00879-6
关键词
anterior cingulate gyrus (ACC); error related negativity (ERN); source localization; low resolution brain electromagnetic tomography; (LORETA)
Recent results suggest that the error-related negativity (ERN/Ne), a negative scalp potential which has so far been associated with error-related processing, is also found for correct responses. This potential is thought to be generated in the anterior cingulate cortex (ACC). To investigate the functional significance of the ERN/Ne, a modified Continuous Performance Task was used. Data analysis was carried out using conventional averaging techniques as well as source localization with low resolution brain electromagnetic tomography (LORETA). Results showed a pronounced negativity associated with correct responses at a frontocentral electrode position, if an expected second imperative stimulus was not presented. LORETA analysis yielded evidence for a source located within the ACC on such trials. Results suggest that a negative scalp potential may be elicited by errorless responses and yield evidence for an evaluative role of the ACC. (C) 2003 Published by Elsevier Ireland Ltd.
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