A Functional Dissociation of Conflict Processing Within Anterior Cingulate Cortex

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Goal-directed behavior requires cognitive control to regulate the occurrence of conflict. The dorsal anterior cingulate cortex (dACC) has been suggested in detecting response conflict during various conflict tasks. Recent findings, however, have indicated not only that two distinct subregions of dACC are involved in conflict processing but also that the conflict occurs at both perceptual and response levels. In this study, we sought to examine whether perceptual and response conflicts are functionally dissociated in dACC. Thirteen healthy subjects performed a version of the Stroop task during functional magnetic resonance imaging (fMRI) scanning. We identified a functional dissociation of the caudal dACC (cdACC) and the rostral dACC (rdACC) in their responses to different sources of conflict. The cdACC was selectively engaged in perceptual conflict whereas the rdACC was more active in response conflict. Further, the dorsolateral prefrontal cortex (DLPFC) was coactivated not with cdACC but with rdACC. We suggest that cdACC plays an important role in regulative processing of perceptual conflict whereas rdACC is involved in detecting response conflict. Hum Brain Mapp 32: 304-312, 2011. (C) 2010Wiley-Liss, Inc.
Publisher
WILEY-LISS
Issue Date
2011-02
Language
English
Article Type
Article
Keywords

STROOP TASK; RESPONSE-CONFLICT; ATTENTIONAL CONTROL; COGNITIVE CONTROL; PREFRONTAL CORTEX; INHIBITION; FMRI; INTERFERENCE; SPECIFICITY; SELECTION

Citation

HUMAN BRAIN MAPPING, v.32, no.2, pp.304 - 312

ISSN
1065-9471
DOI
10.1002/hbm.21020
URI
http://hdl.handle.net/10203/97552
Appears in Collection
HSS-Journal Papers(저널논문)
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