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Strategic control and medial frontal negativity: Beyond errors and response conflict
Author(s) -
Bartholow Bruce D.,
Pearson Melanie A.,
Dickter Cheryl L.,
Sher Kenneth J.,
Fabiani Monica,
Gratton Gabriele
Publication year - 2005
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.2005.00258.x
Subject(s) - psychology , error related negativity , negativity effect , cognitive psychology , stimulus–response compatibility , event related potential , task (project management) , electroencephalography , social psychology , anterior cingulate cortex , cognition , neuroscience , management , economics
Errors in timed choice tasks typically produce an error‐related negativity (ERN) in the event‐related potential (ERP). The error specificity of the ERN has been challenged by studies showing a correct response negativity (CRN). Forty‐five participants engaged in a flanker task in which both compatibility between flankers and target and the probability of compatible flankers were manipulated. Correct responses elicited a CRN, the amplitude of which increased with the degree of mismatch between the presence of conflict and conflict probability, even on low‐conflict (compatible) trials. The fronto‐central N2 component was larger on high‐conflict (incompatible) correct response trials. However, in contrast to some recent accounts, this N2 was largest for highly probable stimuli. These findings suggest revision to models of the effects of conflict on response‐related negativity to account for strategic adjustments made in preparation for the response.