Audiovisual gating and the time course of speech perception.
The time course of audiovisual information in speech perception was examined using a gating paradigm. VCVs that evoked the McGurk effect were gated visually and auditorily. The visual gating yielded a McGurk effect that increased in strength as a linear function of amount of visual stimulus presented. The acoustic gating revealed a more nonlinear function in which the VC information was considerably weaker than the CV portion of the VCV. The results suggest that the flow of cross-modal information in quite complex during audiovisual speech perception.
Department of Psychology, Queen's University, Kingston, Ontario, Canada.
K G
KG
Munhall
Y
Y
Tohkura
D006801:Humans; D013067:Speech Perception / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*