Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/26209

TitleDepth cues and perceived audiovisual synchrony of biological motion
Author(s)Silva, Carlos
Mendonça, Catarina
Mouta, Sandra
Silva, Rosa
Campos, J. Creissac
Santos, Jorge A.
Issue date14-Nov-2013
PublisherPublic Library of Science
JournalPLoS ONE
Abstract(s)Due to their different propagation times, visual and auditory signals from external events arrive at the human sensory receptors with a disparate delay. This delay consistently varies with distance, but, despite such variability, most events are perceived as synchronic. There is, however, contradictory data and claims regarding the existence of compensatory mechanisms for distance in simultaneity judgments. Principal Findings: In this paper we have used familiar audiovisual events – a visual walker and footstep sounds – and manipulated the number of depth cues. In a simultaneity judgment task we presented a large range of stimulus onset asynchronies corresponding to distances of up to 35 meters. We found an effect of distance over the simultaneity estimates, with greater distances requiring larger stimulus onset asynchronies, and vision always leading. This effect was stronger when both visual and auditory cues were present but was interestingly not found when depth cues were impoverished. Significance: These findings reveal that there should be an internal mechanism to compensate for audiovisual delays, which critically depends on the depth information available.
TypeArticle
URIhttp://hdl.handle.net/1822/26209
DOI10.1371/journal.pone.0080096
ISSN1932-6203
Publisher versionhttp://www.plosone.org/
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CAlg - Artigos em revistas internacionais/Papers in international journals
HASLab - Artigos em revistas internacionais
CIPsi - Artigos (Papers)

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