Touch interacts with vision during binocular rivalry with a tight orientation tuning.

Multisensory integration is a common feature of the mammalian brain that allows it to deal more efficiently with the ambiguity of sensory input by combining complementary signals from several sensory sources. Growing evidence suggests that multisensory interactions can occur as early as primary sens...

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Autores principales:	Claudia Lunghi, David Alais
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/26001bab1a434ccaa7fb624221911311
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spelling	oai:doaj.org-article:26001bab1a434ccaa7fb6242219113112021-11-18T07:54:45ZTouch interacts with vision during binocular rivalry with a tight orientation tuning.1932-620310.1371/journal.pone.0058754https://doaj.org/article/26001bab1a434ccaa7fb6242219113112013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23472219/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Multisensory integration is a common feature of the mammalian brain that allows it to deal more efficiently with the ambiguity of sensory input by combining complementary signals from several sensory sources. Growing evidence suggests that multisensory interactions can occur as early as primary sensory cortices. Here we present incompatible visual signals (orthogonal gratings) to each eye to create visual competition between monocular inputs in primary visual cortex where binocular combination would normally take place. The incompatibility prevents binocular fusion and triggers an ambiguous perceptual response in which the two images are perceived one at a time in an irregular alternation. One key function of multisensory integration is to minimize perceptual ambiguity by exploiting cross-sensory congruence. We show that a haptic signal matching one of the visual alternatives helps disambiguate visual perception during binocular rivalry by both prolonging the dominance period of the congruent visual stimulus and by shortening its suppression period. Importantly, this interaction is strictly tuned for orientation, with a mismatch as small as 7.5° between visual and haptic orientations sufficient to annul the interaction. These results indicate important conclusions: first, that vision and touch interact at early levels of visual processing where interocular conflicts are first detected and orientation tunings are narrow, and second, that haptic input can influence visual signals outside of visual awareness, bringing a stimulus made invisible by binocular rivalry suppression back to awareness sooner than would occur without congruent haptic input.Claudia LunghiDavid AlaisPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 3, p e58754 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Claudia Lunghi David Alais Touch interacts with vision during binocular rivalry with a tight orientation tuning.
description	Multisensory integration is a common feature of the mammalian brain that allows it to deal more efficiently with the ambiguity of sensory input by combining complementary signals from several sensory sources. Growing evidence suggests that multisensory interactions can occur as early as primary sensory cortices. Here we present incompatible visual signals (orthogonal gratings) to each eye to create visual competition between monocular inputs in primary visual cortex where binocular combination would normally take place. The incompatibility prevents binocular fusion and triggers an ambiguous perceptual response in which the two images are perceived one at a time in an irregular alternation. One key function of multisensory integration is to minimize perceptual ambiguity by exploiting cross-sensory congruence. We show that a haptic signal matching one of the visual alternatives helps disambiguate visual perception during binocular rivalry by both prolonging the dominance period of the congruent visual stimulus and by shortening its suppression period. Importantly, this interaction is strictly tuned for orientation, with a mismatch as small as 7.5° between visual and haptic orientations sufficient to annul the interaction. These results indicate important conclusions: first, that vision and touch interact at early levels of visual processing where interocular conflicts are first detected and orientation tunings are narrow, and second, that haptic input can influence visual signals outside of visual awareness, bringing a stimulus made invisible by binocular rivalry suppression back to awareness sooner than would occur without congruent haptic input.
format	article
author	Claudia Lunghi David Alais
author_facet	Claudia Lunghi David Alais
author_sort	Claudia Lunghi
title	Touch interacts with vision during binocular rivalry with a tight orientation tuning.
title_short	Touch interacts with vision during binocular rivalry with a tight orientation tuning.
title_full	Touch interacts with vision during binocular rivalry with a tight orientation tuning.
title_fullStr	Touch interacts with vision during binocular rivalry with a tight orientation tuning.
title_full_unstemmed	Touch interacts with vision during binocular rivalry with a tight orientation tuning.
title_sort	touch interacts with vision during binocular rivalry with a tight orientation tuning.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/26001bab1a434ccaa7fb624221911311
work_keys_str_mv	AT claudialunghi touchinteractswithvisionduringbinocularrivalrywithatightorientationtuning AT davidalais touchinteractswithvisionduringbinocularrivalrywithatightorientationtuning
_version_	1718422775037689856

Touch interacts with vision during binocular rivalry with a tight orientation tuning.

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