Audiovisual time perception is spatially specific

Our sensory systems face a daily barrage of auditory and visual signals whose arrival times form a wide range of audiovisual asynchronies. These temporal relationships constitute an important metric for the nervous system when surmising which signals originate from common external events. Internal c...

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Main Authors:	Heron, James, Roach, Neil W., Hanson, James V. M., McGraw, Paul V., Whitaker, David
Format:	Online
Language:	English
Published:	Springer-Verlag 2012
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3324684/

id	pubmed-3324684
recordtype	oai_dc
spelling	pubmed-33246842012-04-20 Audiovisual time perception is spatially specific Heron, James Roach, Neil W. Hanson, James V. M. McGraw, Paul V. Whitaker, David Research Article Our sensory systems face a daily barrage of auditory and visual signals whose arrival times form a wide range of audiovisual asynchronies. These temporal relationships constitute an important metric for the nervous system when surmising which signals originate from common external events. Internal consistency is known to be aided by sensory adaptation: repeated exposure to consistent asynchrony brings perceived arrival times closer to simultaneity. However, given the diverse nature of our audiovisual environment, functionally useful adaptation would need to be constrained to signals that were generated together. In the current study, we investigate the role of two potential constraining factors: spatial and contextual correspondence. By employing an experimental design that allows independent control of both factors, we show that observers are able to simultaneously adapt to two opposing temporal relationships, provided they are segregated in space. No such recalibration was observed when spatial segregation was replaced by contextual stimulus features (in this case, pitch and spatial frequency). These effects provide support for dedicated asynchrony mechanisms that interact with spatially selective mechanisms early in visual and auditory sensory pathways. Springer-Verlag 2012-02-25 2012-05 /pmc/articles/PMC3324684/ /pubmed/22367399 http://dx.doi.org/10.1007/s00221-012-3038-3 Text en © The Author(s) 2012
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Heron, James Roach, Neil W. Hanson, James V. M. McGraw, Paul V. Whitaker, David
spellingShingle	Heron, James Roach, Neil W. Hanson, James V. M. McGraw, Paul V. Whitaker, David Audiovisual time perception is spatially specific
author_facet	Heron, James Roach, Neil W. Hanson, James V. M. McGraw, Paul V. Whitaker, David
author_sort	Heron, James
title	Audiovisual time perception is spatially specific
title_short	Audiovisual time perception is spatially specific
title_full	Audiovisual time perception is spatially specific
title_fullStr	Audiovisual time perception is spatially specific
title_full_unstemmed	Audiovisual time perception is spatially specific
title_sort	audiovisual time perception is spatially specific
description	Our sensory systems face a daily barrage of auditory and visual signals whose arrival times form a wide range of audiovisual asynchronies. These temporal relationships constitute an important metric for the nervous system when surmising which signals originate from common external events. Internal consistency is known to be aided by sensory adaptation: repeated exposure to consistent asynchrony brings perceived arrival times closer to simultaneity. However, given the diverse nature of our audiovisual environment, functionally useful adaptation would need to be constrained to signals that were generated together. In the current study, we investigate the role of two potential constraining factors: spatial and contextual correspondence. By employing an experimental design that allows independent control of both factors, we show that observers are able to simultaneously adapt to two opposing temporal relationships, provided they are segregated in space. No such recalibration was observed when spatial segregation was replaced by contextual stimulus features (in this case, pitch and spatial frequency). These effects provide support for dedicated asynchrony mechanisms that interact with spatially selective mechanisms early in visual and auditory sensory pathways.
publisher	Springer-Verlag
publishDate	2012
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3324684/
_version_	1611520508642197504

Audiovisual time perception is spatially specific

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