Haptic awareness changes when lying down

Abstract Accurate localization of touch requires the integration of two reference frames—an internal (e.g., anatomical) and an external (e.g., spatial). Using a tactile temporal order judgement task with the hands crossed over the midline, we investigated the integration of these two reference frame...

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Autores principales:	Kaian Unwalla, Michelle L. Cadieux, David I. Shore
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9c0e4718b8554dfba7b54fb2a30818de
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id	oai:doaj.org-article:9c0e4718b8554dfba7b54fb2a30818de
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spelling	oai:doaj.org-article:9c0e4718b8554dfba7b54fb2a30818de2021-12-02T18:18:44ZHaptic awareness changes when lying down10.1038/s41598-021-92192-12045-2322https://doaj.org/article/9c0e4718b8554dfba7b54fb2a30818de2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92192-1https://doaj.org/toc/2045-2322Abstract Accurate localization of touch requires the integration of two reference frames—an internal (e.g., anatomical) and an external (e.g., spatial). Using a tactile temporal order judgement task with the hands crossed over the midline, we investigated the integration of these two reference frames. We manipulated the reliability of the visual and vestibular information, both of which contribute to the external reference frame. Visual information was manipulated between experiments (Experiment 1 was done with full vision and Experiment 2 was done while wearing a blindfold). Vestibular information was manipulated in both experiments by having the two groups of participants complete the task in both an upright posture and one where they were lying down on their side. Using a Bayesian hierarchical model, we estimated the perceptual weight applied to these reference frames. Lying participants on their side reduced the weight applied to the external reference frame and produced a smaller deficit; blindfolding resulted in similar reductions. These findings reinforce the importance of the visual system when weighting tactile reference frames, and highlight the importance of the vestibular system in this integration.Kaian UnwallaMichelle L. CadieuxDavid I. ShoreNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kaian Unwalla Michelle L. Cadieux David I. Shore Haptic awareness changes when lying down
description	Abstract Accurate localization of touch requires the integration of two reference frames—an internal (e.g., anatomical) and an external (e.g., spatial). Using a tactile temporal order judgement task with the hands crossed over the midline, we investigated the integration of these two reference frames. We manipulated the reliability of the visual and vestibular information, both of which contribute to the external reference frame. Visual information was manipulated between experiments (Experiment 1 was done with full vision and Experiment 2 was done while wearing a blindfold). Vestibular information was manipulated in both experiments by having the two groups of participants complete the task in both an upright posture and one where they were lying down on their side. Using a Bayesian hierarchical model, we estimated the perceptual weight applied to these reference frames. Lying participants on their side reduced the weight applied to the external reference frame and produced a smaller deficit; blindfolding resulted in similar reductions. These findings reinforce the importance of the visual system when weighting tactile reference frames, and highlight the importance of the vestibular system in this integration.
format	article
author	Kaian Unwalla Michelle L. Cadieux David I. Shore
author_facet	Kaian Unwalla Michelle L. Cadieux David I. Shore
author_sort	Kaian Unwalla
title	Haptic awareness changes when lying down
title_short	Haptic awareness changes when lying down
title_full	Haptic awareness changes when lying down
title_fullStr	Haptic awareness changes when lying down
title_full_unstemmed	Haptic awareness changes when lying down
title_sort	haptic awareness changes when lying down
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9c0e4718b8554dfba7b54fb2a30818de
work_keys_str_mv	AT kaianunwalla hapticawarenesschangeswhenlyingdown AT michellelcadieux hapticawarenesschangeswhenlyingdown AT davidishore hapticawarenesschangeswhenlyingdown
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Haptic awareness changes when lying down

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