The N270 component of the event-related potential reflects supramodal conflict processing in humans.

Full Abstract

It is unclear whether crossmodal information conflict can initiate the conflict processing system indexed by a component of the event-related potential (ERP) called the N270, which previously has been observed only for visual conflict. ERPs were recorded in ten subjects, while they were engaged in a visual-auditory discrimination task. A visual stimulus of a facial photograph was followed by an auditory stimulus of Chinese syllable [a] or [i], which might be sounded by the same gender of its preceding photograph (gender match) or by different gender (gender conflict). Subjects pressed a button for gender match and another for gender conflict. A prominent N270, similar to that evoked by visual conflicts, was elicited by the auditory stimuli in gender conflict condition. It is likely that N270 reflects the brain activity of a supra-modal conflict processing system.

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Author information

Author/s: Wang, Yuping (Y); Wang, Huijun (H); Cui, Lili (L); Tian, Shujuan (S); Zhang, Yuanyuan (Y);

Affiliation: Department of Neurology, Xuanwu Hospital, Capital University of Medical Sciences, Beijing, 100053, People's Republic of China. wangyupi(-atsign-)public.bta.net.cn

Journal and publication information

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

Journal: Neuroscience letters (Neurosci Lett), published in Ireland. (Language: eng)

Reference: 2002-Oct; vol 332 (issue 1) : pp 25-8

Dates: Created 2002/10/14; Completed 2002/11/27; Revised 2006/11/15;

PMID: 12377376, status: MEDLINE (last retrieval date: 12/26/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Female
Humans
Male
Photic Stimulation - methods
Reaction Time - physiology

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