Premium
Complementary modulation of N 2 and CRN by conflict frequency
Author(s) -
Grützmann Rosa,
Riesel Anja,
Klawohn Julia,
Kathmann Norbert,
Endrass Tanja
Publication year - 2014
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/psyp.12222
Subject(s) - psychology , conflict resolution , stimulus (psychology) , cognition , amplitude , negativity effect , social psychology , cognitive psychology , neuroscience , optics , physics , political science , law
The present study investigated the modulation of the N 2 and the correct‐related negativity ( CRN ) by conflict frequency. Conflict costs, as measured by reaction times and error rate, were reduced with increasing conflict frequency, indicating improved conflict resolution. N 2 amplitudes in incompatible trials increased with higher conflict frequency, while postresponse CRN amplitudes decreased. In concert with behavioral findings of reduced conflict costs and greater interference suppression, the increase of N 2 might reflect enhanced conflict resolution during stimulus processing. The CRN , however, might reflect postresponse implementation of cognitive control, which is reduced when conflict is already adequately resolved during stimulus processing. Furthermore, N 2 and CRN in incompatible trials were inversely related on the between‐ and within‐subject level, implying that the two modes of implementing cognitive control are applied complementarily.