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Title: Conflict monitoring engages the mediofrontal cortex during nonword processing
Authors: Hofmann, M. J.
Tamm, S.
Braun, M. M.
Dambacher, Michael
Hahne, A.
Jacobs, A. M.
First Published: 8-Jan-2008
Publisher: Lippincott, Williams & Wilkins
Citation: Neuroreport, 2008, 19 (1), pp. 25-29
Abstract: The current study investigated the role played by conflict monitoring in a lexical-decision task involving competing word representations, using event-related potentials. We extended the multiple read-out model (Grainger and Jacobs, 1996), a connectionist model of word recognition, to quantify conflict by means of Hopfield Energy, which is defined as the sum of the products of all orthographic word node pair activations within the artificial mental lexicon of this model. With increasing conflict levels in nonwords, a late negativity increased in amplitude (400-600 ms) accompanied by activation of the anterior cingulate cortex and the medial frontal gyrus. The simulated conflict predicted the amplitudes associated with this mediofrontal conflict-monitoring network on an item level, and is consistent with the conflict-monitoring theory.
DOI Link: 10.1097/WNR.0b013e3282f3b134
ISSN: 0959-4965
eISSN: 1473-558X
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2008 Lippincott Williams & Wilkins, Inc. All rights reserved. This is a non-final version of an article published in final form in Neuroreport, 2008, 19 (1), pp. 25-29. Deposited with reference to the publisher’s archiving policy available on the SHERPA/RoMEO website.
Appears in Collections:Published Articles, Dept. of Neuroscience, Psychology and Behaviour

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