The influence of spatial congruency on audiovisual interaction in a visual-attention task

Qi Li, Jinglong Wu, Tetsuo Touge

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The influence of spatial congruency on audiovisual interaction in a visual-attention task in which only the visual segment of a bimodal audiovisual stimulus was required to attend was investigated using behavioral and electrophysiological measures in humans. The behavioral results showed that the responses to audiovisual target stimuli were faster than that to unimodal visual target stimuli. Moreover, we recorded event-related potentials (ERPs) to unimodal visual stimuli, unimodal auditory stimuli, spatially congruent, and incongruent bimodal audiovisual stimuli. The audiovisual interaction effects were detected by comparing the ERPs to audiovisual stimuli with the sum or the ERPs to unimodal visual and auditory stimuli. The ERPs results showed audiovisual interaction were detected as a negativity in mid-central scalp sites at around a latency of 300 ms during the later stage of processing under both a spatially congruent condition and incongruent condition. But the amplitude around 300ms was significantly larger than that under a spatially congruent condition. Thus, audiovisual interaction depends on the spatial congruity of the bimodal audiovisual stimuli.

Original languageEnglish
Title of host publication2009 ICME International Conference on Complex Medical Engineering, CME 2009
DOIs
Publication statusPublished - Jul 23 2009
Event2009 ICME International Conference on Complex Medical Engineering, CME 2009 - Tempe, AZ, United States
Duration: Apr 9 2009Apr 11 2009

Publication series

Name2009 ICME International Conference on Complex Medical Engineering, CME 2009

Other

Other2009 ICME International Conference on Complex Medical Engineering, CME 2009
CountryUnited States
CityTempe, AZ
Period4/9/094/11/09

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics

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    Li, Q., Wu, J., & Touge, T. (2009). The influence of spatial congruency on audiovisual interaction in a visual-attention task. In 2009 ICME International Conference on Complex Medical Engineering, CME 2009 [4906589] (2009 ICME International Conference on Complex Medical Engineering, CME 2009). https://doi.org/10.1109/ICCME.2009.4906589