Research article summary (published 27 Oct 2005):

Neural correlates of conflict processing.

Full Abstract

In this study we examined the neural correlates of conflict processing in the Stroop, counting, and digit-location tasks using event-related brain potentials (ERPs). The behavioral data revealed robust interference in response time and accuracy for all tasks. The interference effect for response time was greater in the Stroop task than the other tasks; in contrast, the interference effect for response accuracy was greater in the counting tasks than the other tasks. The N450 and sustained potential (SP) were elicited in each task. Partial least-squares (PLS) analysis was used to examine the structural relationships between the ERPs, task design, and behavior. TaskPLS analysis revealed that the N450 and SP were associated with a single latent variable leading to the suggestion that a common set of neural generators was recruited during conflict processing across the tasks and that there were differences between ERPs related to early processing across the three tasks. BehavioralPLS analysis revealed that the amplitude of the SP was positively correlated with response time and accuracy, indicating that this modulation of the ERPs may be related to response selection rather than to conflict resolution.

Author information

Author/s: West, Robert (R); Jakubek, Kristin (K); Wymbs, Nicholas (N); Perry, Michele (M); Moore, Kara (K);

Affiliation: Department of Psychology, University of Notre Dame, Notre Dame, IN 46556, USA. west.19(-atsign-)nd.edu

Journal and publication information

Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't

Journal: Experimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale (Exp Brain Res), published in Germany. (Language: eng)

Reference: 2005-Nov; vol 167 (issue 1) : pp 38-48

Dates: Created 2005/11/02; Completed 2006/03/29; Revised 2008/02/15;

PMID: 16082533, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adolescent Adult Analysis of Variance Brain Mapping Conflict (Psychology) Electroencephalography - methods Evoked Potentials - physiology

Female Humans Male Mental Processes - physiology Neuropsychological Tests Psychomotor Performance - physiology Reaction Time - physiology

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