Document Detail

Perception of intersensory synchrony in audiovisual speech: not that special.
MedLine Citation:
PMID:  21035795     Owner:  NLM     Status:  In-Process    
Perception of intersensory temporal order is particularly difficult for (continuous) audiovisual speech, as perceivers may find it difficult to notice substantial timing differences between speech sounds and lip movements. Here we tested whether this occurs because audiovisual speech is strongly paired ("unity assumption"). Participants made temporal order judgments (TOJ) and simultaneity judgments (SJ) about sine-wave speech (SWS) replicas of pseudowords and the corresponding video of the face. Listeners in speech and non-speech mode were equally sensitive judging audiovisual temporal order. Yet, using the McGurk effect, we could demonstrate that the sound was more likely integrated with lipread speech if heard as speech than non-speech. Judging temporal order in audiovisual speech is thus unaffected by whether the auditory and visual streams are paired. Conceivably, previously found differences between speech and non-speech stimuli are not due to the putative "special" nature of speech, but rather reflect low-level stimulus differences.
Jean Vroomen; Jeroen J Stekelenburg
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Publication Detail:
Type:  Journal Article     Date:  2010-10-29
Journal Detail:
Title:  Cognition     Volume:  118     ISSN:  1873-7838     ISO Abbreviation:  Cognition     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-06     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0367541     Medline TA:  Cognition     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  75-83     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier B.V. All rights reserved.
Tilburg University, Department of Medical Psychology and Neuropsychology, P.O. Box 90153, 5000 LE Tilburg, The Netherlands.
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