Audio-visual speech timing sensitivity is enhanced in cluttered conditions.

Events encoded in separate sensory modalities, such as audition and vision, can seem to be synchronous across a relatively broad range of physical timing differences. This may suggest that the precision of audio-visual timing judgments is inherently poor. Here we show that this is not necessarily tr...

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Autores principales:	Warrick Roseboom, Shin'ya Nishida, Waka Fujisaki, Derek H Arnold
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/02a8e834d7114fc680a93862cd1ae2de
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spelling	oai:doaj.org-article:02a8e834d7114fc680a93862cd1ae2de2021-11-18T06:56:08ZAudio-visual speech timing sensitivity is enhanced in cluttered conditions.1932-620310.1371/journal.pone.0018309https://doaj.org/article/02a8e834d7114fc680a93862cd1ae2de2011-04-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21494684/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Events encoded in separate sensory modalities, such as audition and vision, can seem to be synchronous across a relatively broad range of physical timing differences. This may suggest that the precision of audio-visual timing judgments is inherently poor. Here we show that this is not necessarily true. We contrast timing sensitivity for isolated streams of audio and visual speech, and for streams of audio and visual speech accompanied by additional, temporally offset, visual speech streams. We find that the precision with which synchronous streams of audio and visual speech are identified is enhanced by the presence of additional streams of asynchronous visual speech. Our data suggest that timing perception is shaped by selective grouping processes, which can result in enhanced precision in temporally cluttered environments. The imprecision suggested by previous studies might therefore be a consequence of examining isolated pairs of audio and visual events. We argue that when an isolated pair of cross-modal events is presented, they tend to group perceptually and to seem synchronous as a consequence. We have revealed greater precision by providing multiple visual signals, possibly allowing a single auditory speech stream to group selectively with the most synchronous visual candidate. The grouping processes we have identified might be important in daily life, such as when we attempt to follow a conversation in a crowded room.Warrick RoseboomShin'ya NishidaWaka FujisakiDerek H ArnoldPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 4, p e18309 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Warrick Roseboom Shin'ya Nishida Waka Fujisaki Derek H Arnold Audio-visual speech timing sensitivity is enhanced in cluttered conditions.
description	Events encoded in separate sensory modalities, such as audition and vision, can seem to be synchronous across a relatively broad range of physical timing differences. This may suggest that the precision of audio-visual timing judgments is inherently poor. Here we show that this is not necessarily true. We contrast timing sensitivity for isolated streams of audio and visual speech, and for streams of audio and visual speech accompanied by additional, temporally offset, visual speech streams. We find that the precision with which synchronous streams of audio and visual speech are identified is enhanced by the presence of additional streams of asynchronous visual speech. Our data suggest that timing perception is shaped by selective grouping processes, which can result in enhanced precision in temporally cluttered environments. The imprecision suggested by previous studies might therefore be a consequence of examining isolated pairs of audio and visual events. We argue that when an isolated pair of cross-modal events is presented, they tend to group perceptually and to seem synchronous as a consequence. We have revealed greater precision by providing multiple visual signals, possibly allowing a single auditory speech stream to group selectively with the most synchronous visual candidate. The grouping processes we have identified might be important in daily life, such as when we attempt to follow a conversation in a crowded room.
format	article
author	Warrick Roseboom Shin'ya Nishida Waka Fujisaki Derek H Arnold
author_facet	Warrick Roseboom Shin'ya Nishida Waka Fujisaki Derek H Arnold
author_sort	Warrick Roseboom
title	Audio-visual speech timing sensitivity is enhanced in cluttered conditions.
title_short	Audio-visual speech timing sensitivity is enhanced in cluttered conditions.
title_full	Audio-visual speech timing sensitivity is enhanced in cluttered conditions.
title_fullStr	Audio-visual speech timing sensitivity is enhanced in cluttered conditions.
title_full_unstemmed	Audio-visual speech timing sensitivity is enhanced in cluttered conditions.
title_sort	audio-visual speech timing sensitivity is enhanced in cluttered conditions.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/02a8e834d7114fc680a93862cd1ae2de
work_keys_str_mv	AT warrickroseboom audiovisualspeechtimingsensitivityisenhancedinclutteredconditions AT shinyanishida audiovisualspeechtimingsensitivityisenhancedinclutteredconditions AT wakafujisaki audiovisualspeechtimingsensitivityisenhancedinclutteredconditions AT derekharnold audiovisualspeechtimingsensitivityisenhancedinclutteredconditions
_version_	1718424146131550208

Audio-visual speech timing sensitivity is enhanced in cluttered conditions.

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