Research article summary (published 16 Apr 2008):

Attention rivalry under irrelevant audiovisual stimulation.

Full Abstract

Audiovisual integration has been known to enhance perception; nevertheless, another fundamental audiovisual interaction, i.e. attention rivalry, has not been well investigated. This paper studied the attention rivalry under irrelevant audiovisual stimulation using event-related potential (ERP) and behavioral analysis, and tested the existence of a vision dominated rivalry model. Participants need respond to the target in a bi- or unimodal audiovisual stimulation paradigm. The enhanced amplitude of central P300 under visual target bimodal stimulus indicated that vision demanded more cognitive resources, and the significant amplitude of frontal P200 under bimodal stimulus with non-target auditory stimulus implied that the brain mostly restrained the process of the non-target auditory information. ERP results, together with the analysis of the behavioral data and the subtraction waves, indicated a vision dominated attention rivalry model involved in audiovisual interaction. Furthermore, the latencies of P200 and P300 components implied that audiovisual attention rivalry occurred within the first 300ms after stimulus onset, i.e. significant differences were found in P200 latencies among three target bimodal stimuli, while no difference existed in P300 latencies. Attention shifting and re-directing might be the cause of such early audiovisual rivalry.

Author information

Author/s: Feng, Ting (T); Qiu, Yihong (Y); Zhu, Yisheng (Y); Tong, Shanbao (S);

Affiliation: Department of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.

Journal and publication information

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

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

Reference: 2008-Jun; vol 438 (issue 1) : pp 6-9

Dates: Created 2008/05/23; Completed 2008/09/08;

PMID: 18482799, 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.

Acoustic Stimulation Adult Attention - physiology Auditory Perception - physiology Cerebral Cortex - physiology Electroencephalography Evoked Potentials - physiology Female Functional Laterality - physiology Humans

Humans Male Models, Neurological Neural Inhibition - physiology Neuropsychological Tests Photic Stimulation Reaction Time - physiology Speech Perception - physiology Time Factors Visual Perception - physiology

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