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Speeded responses to audiovisual signal changes result from bimodal integration

Published online by Cambridge University Press:  01 November 1998

ERICH SCHRÖGER  and
ANDREAS WIDMANN
ERICH SCHRÖGER
Affiliation:
Institut für Allgemeine Psychologie der Universität Leipzig, Germany
ANDREAS WIDMANN
Affiliation:
Institut für Allgemeine Psychologie der Universität Leipzig, Germany
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Abstract

Integration of auditory and visual information was studied in humans detecting targets (i.e., location changes of the auditory, the visual, or both parts of a repetitively presented audiovisual stimulus). Behavioral results suggest that the time advantage to bimodal compared with unimodal targets was due to combined rather than separate processing of the auditory and the visual target information. Event-related brain potential results revealed strong audiovisual interactions supporting interactive and not independent coactivation models. The time course of this interaction suggests that the audiovisual integration occurred after low-level, sensory processing but well before the execution of the motor response.

Keywords

Audiovisual integrationRedundant target effectCrossmodal interaction
Type
SPECIAL REPORT
Information
Psychophysiology , Volume 35 , Issue 6 , November 1998 , pp. 755 - 759
Copyright
1998 Society for Psychophysiological Research

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