Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search

Abstract Does multisensory distractor-target context learning enhance visual search over and above unisensory learning? To address this, we had participants perform a visual search task under both uni- and multisensory conditions. Search arrays consisted of one Gabor target that differed from three...

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Autores principales:	Siyi Chen, Zhuanghua Shi, Hermann J. Müller, Thomas Geyer
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4bb5e9f8834c4b8fa04fd4602b3a5b7e
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spelling	oai:doaj.org-article:4bb5e9f8834c4b8fa04fd4602b3a5b7e2021-12-02T14:41:52ZMultisensory visuo-tactile context learning enhances the guidance of unisensory visual search10.1038/s41598-021-88946-62045-2322https://doaj.org/article/4bb5e9f8834c4b8fa04fd4602b3a5b7e2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88946-6https://doaj.org/toc/2045-2322Abstract Does multisensory distractor-target context learning enhance visual search over and above unisensory learning? To address this, we had participants perform a visual search task under both uni- and multisensory conditions. Search arrays consisted of one Gabor target that differed from three homogeneous distractors in orientation; participants had to discriminate the target’s orientation. In the multisensory session, additional tactile (vibration-pattern) stimulation was delivered to two fingers of each hand, with the odd-one-out tactile target and the distractors co-located with the corresponding visual items in half the trials; the other half presented the visual array only. In both sessions, the visual target was embedded within identical (repeated) spatial arrangements of distractors in half of the trials. The results revealed faster response times to targets in repeated versus non-repeated arrays, evidencing ‘contextual cueing’. This effect was enhanced in the multisensory session—importantly, even when the visual arrays presented without concurrent tactile stimulation. Drift–diffusion modeling confirmed that contextual cueing increased the rate at which task-relevant information was accumulated, as well as decreasing the amount of evidence required for a response decision. Importantly, multisensory learning selectively enhanced the evidence-accumulation rate, expediting target detection even when the context memories were triggered by visual stimuli alone.Siyi ChenZhuanghua ShiHermann J. MüllerThomas GeyerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Siyi Chen Zhuanghua Shi Hermann J. Müller Thomas Geyer Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search
description	Abstract Does multisensory distractor-target context learning enhance visual search over and above unisensory learning? To address this, we had participants perform a visual search task under both uni- and multisensory conditions. Search arrays consisted of one Gabor target that differed from three homogeneous distractors in orientation; participants had to discriminate the target’s orientation. In the multisensory session, additional tactile (vibration-pattern) stimulation was delivered to two fingers of each hand, with the odd-one-out tactile target and the distractors co-located with the corresponding visual items in half the trials; the other half presented the visual array only. In both sessions, the visual target was embedded within identical (repeated) spatial arrangements of distractors in half of the trials. The results revealed faster response times to targets in repeated versus non-repeated arrays, evidencing ‘contextual cueing’. This effect was enhanced in the multisensory session—importantly, even when the visual arrays presented without concurrent tactile stimulation. Drift–diffusion modeling confirmed that contextual cueing increased the rate at which task-relevant information was accumulated, as well as decreasing the amount of evidence required for a response decision. Importantly, multisensory learning selectively enhanced the evidence-accumulation rate, expediting target detection even when the context memories were triggered by visual stimuli alone.
format	article
author	Siyi Chen Zhuanghua Shi Hermann J. Müller Thomas Geyer
author_facet	Siyi Chen Zhuanghua Shi Hermann J. Müller Thomas Geyer
author_sort	Siyi Chen
title	Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search
title_short	Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search
title_full	Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search
title_fullStr	Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search
title_full_unstemmed	Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search
title_sort	multisensory visuo-tactile context learning enhances the guidance of unisensory visual search
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4bb5e9f8834c4b8fa04fd4602b3a5b7e
work_keys_str_mv	AT siyichen multisensoryvisuotactilecontextlearningenhancestheguidanceofunisensoryvisualsearch AT zhuanghuashi multisensoryvisuotactilecontextlearningenhancestheguidanceofunisensoryvisualsearch AT hermannjmuller multisensoryvisuotactilecontextlearningenhancestheguidanceofunisensoryvisualsearch AT thomasgeyer multisensoryvisuotactilecontextlearningenhancestheguidanceofunisensoryvisualsearch
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Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search

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