Touch influences visual perception with a tight orientation-tuning.

Stimuli from different sensory modalities are thought to be processed initially in distinct unisensory brain areas prior to convergence in multisensory areas. However, signals in one modality can influence the processing of signals from other modalities and recent studies suggest this cross-modal in...

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Autores principales:	Onno van der Groen, Erik van der Burg, 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/d1d146d6ca0f4fa7844b55160693644a
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spelling	oai:doaj.org-article:d1d146d6ca0f4fa7844b55160693644a2021-11-18T08:46:30ZTouch influences visual perception with a tight orientation-tuning.1932-620310.1371/journal.pone.0079558https://doaj.org/article/d1d146d6ca0f4fa7844b55160693644a2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24244523/?tool=EBIhttps://doaj.org/toc/1932-6203Stimuli from different sensory modalities are thought to be processed initially in distinct unisensory brain areas prior to convergence in multisensory areas. However, signals in one modality can influence the processing of signals from other modalities and recent studies suggest this cross-modal influence may occur early on, even in 'unisensory' areas. Some recent psychophysical studies have shown specific cross-modal effects between touch and vision during binocular rivalry, but these cannot completely rule out a response bias. To test for genuine cross-modal integration of haptic and visual signals, we investigated whether congruent haptic input could influence visual contrast sensitivity compared to incongruent haptic input in three psychophysical experiments using a two-interval, two-alternative forced-choice method to eliminate response bias. The initial experiment demonstrated that contrast thresholds for a visual grating were lower when exploring a haptic grating that shared the same orientation compared to an orthogonal orientation. Two subsequent experiments mapped the orientation and spatial frequency tunings for the congruent haptic facilitation of vision, finding a clear orientation tuning effect but not a spatial frequency tuning. In addition to an increased contrast sensitivity for iso-oriented visual-haptic gratings, we found a significant loss of sensitivity for orthogonally oriented visual-haptic gratings. We conclude that the tactile influence on vision is a result of a tactile input to orientation-tuned visual areas.Onno van der GroenErik van der BurgClaudia LunghiDavid AlaisPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 11, p e79558 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Onno van der Groen Erik van der Burg Claudia Lunghi David Alais Touch influences visual perception with a tight orientation-tuning.
description	Stimuli from different sensory modalities are thought to be processed initially in distinct unisensory brain areas prior to convergence in multisensory areas. However, signals in one modality can influence the processing of signals from other modalities and recent studies suggest this cross-modal influence may occur early on, even in 'unisensory' areas. Some recent psychophysical studies have shown specific cross-modal effects between touch and vision during binocular rivalry, but these cannot completely rule out a response bias. To test for genuine cross-modal integration of haptic and visual signals, we investigated whether congruent haptic input could influence visual contrast sensitivity compared to incongruent haptic input in three psychophysical experiments using a two-interval, two-alternative forced-choice method to eliminate response bias. The initial experiment demonstrated that contrast thresholds for a visual grating were lower when exploring a haptic grating that shared the same orientation compared to an orthogonal orientation. Two subsequent experiments mapped the orientation and spatial frequency tunings for the congruent haptic facilitation of vision, finding a clear orientation tuning effect but not a spatial frequency tuning. In addition to an increased contrast sensitivity for iso-oriented visual-haptic gratings, we found a significant loss of sensitivity for orthogonally oriented visual-haptic gratings. We conclude that the tactile influence on vision is a result of a tactile input to orientation-tuned visual areas.
format	article
author	Onno van der Groen Erik van der Burg Claudia Lunghi David Alais
author_facet	Onno van der Groen Erik van der Burg Claudia Lunghi David Alais
author_sort	Onno van der Groen
title	Touch influences visual perception with a tight orientation-tuning.
title_short	Touch influences visual perception with a tight orientation-tuning.
title_full	Touch influences visual perception with a tight orientation-tuning.
title_fullStr	Touch influences visual perception with a tight orientation-tuning.
title_full_unstemmed	Touch influences visual perception with a tight orientation-tuning.
title_sort	touch influences visual perception with a tight orientation-tuning.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/d1d146d6ca0f4fa7844b55160693644a
work_keys_str_mv	AT onnovandergroen touchinfluencesvisualperceptionwithatightorientationtuning AT erikvanderburg touchinfluencesvisualperceptionwithatightorientationtuning AT claudialunghi touchinfluencesvisualperceptionwithatightorientationtuning AT davidalais touchinfluencesvisualperceptionwithatightorientationtuning
_version_	1718421351700627456

Touch influences visual perception with a tight orientation-tuning.

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