Auditory-Visual Speech Processing (AVSP'99)
August 7-10, 1999
The purpose of this research was to explore the interrelationship of audiovisual speech perception and spoken word recognition. I tested whether an index of audiovisual integration, the "McGurk effect," would be influenced by the lexical status of the stimuli. There was a significant increase in the McGurk effect when the visually-influenced percept formed a word than when it formed a nonword, and an increase in the effect when the auditory stimulus was a nonword compared to when it was a word. A second experiment ruled out a response-bias account of these findings by demonstrating a similar effect in nonword stimuli that differed in their number of word "neighbors." I discuss the implications of these findings for theories of audiovisual speech perception.
Bibliographic reference. Brancazio, Lawrence (1999): "Lexical influences on the McGurk effect", In AVSP-1999, paper #11.