Active strategies for multisensory conflict suppression in the virtual hand illusion

Abstract The perception of our body in space is flexible and manipulable. The predictive brain hypothesis explains this malleability as a consequence of the interplay between incoming sensory information and our body expectations. However, given the interaction between perception and action, we migh...

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Autores principales:	Pablo Lanillos, Sae Franklin, Antonella Maselli, David W. Franklin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/32709330efc040e5a1f703ad50fb2cf1
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id	oai:doaj.org-article:32709330efc040e5a1f703ad50fb2cf1
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spelling	oai:doaj.org-article:32709330efc040e5a1f703ad50fb2cf12021-11-28T12:21:25ZActive strategies for multisensory conflict suppression in the virtual hand illusion10.1038/s41598-021-02200-72045-2322https://doaj.org/article/32709330efc040e5a1f703ad50fb2cf12021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02200-7https://doaj.org/toc/2045-2322Abstract The perception of our body in space is flexible and manipulable. The predictive brain hypothesis explains this malleability as a consequence of the interplay between incoming sensory information and our body expectations. However, given the interaction between perception and action, we might also expect that actions would arise due to prediction errors, especially in conflicting situations. Here we describe a computational model, based on the free-energy principle, that forecasts involuntary movements in sensorimotor conflicts. We experimentally confirm those predictions in humans using a virtual reality rubber-hand illusion. Participants generated movements (forces) towards the virtual hand, regardless of its location with respect to the real arm, with little to no forces produced when the virtual hand overlaid their physical hand. The congruency of our model predictions and human observations indicates that the brain-body is generating actions to reduce the prediction error between the expected arm location and the new visual arm. This observed unconscious mechanism is an empirical validation of the perception–action duality in body adaptation to uncertain situations and evidence of the active component of predictive processing.Pablo LanillosSae FranklinAntonella MaselliDavid W. FranklinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Pablo Lanillos Sae Franklin Antonella Maselli David W. Franklin Active strategies for multisensory conflict suppression in the virtual hand illusion
description	Abstract The perception of our body in space is flexible and manipulable. The predictive brain hypothesis explains this malleability as a consequence of the interplay between incoming sensory information and our body expectations. However, given the interaction between perception and action, we might also expect that actions would arise due to prediction errors, especially in conflicting situations. Here we describe a computational model, based on the free-energy principle, that forecasts involuntary movements in sensorimotor conflicts. We experimentally confirm those predictions in humans using a virtual reality rubber-hand illusion. Participants generated movements (forces) towards the virtual hand, regardless of its location with respect to the real arm, with little to no forces produced when the virtual hand overlaid their physical hand. The congruency of our model predictions and human observations indicates that the brain-body is generating actions to reduce the prediction error between the expected arm location and the new visual arm. This observed unconscious mechanism is an empirical validation of the perception–action duality in body adaptation to uncertain situations and evidence of the active component of predictive processing.
format	article
author	Pablo Lanillos Sae Franklin Antonella Maselli David W. Franklin
author_facet	Pablo Lanillos Sae Franklin Antonella Maselli David W. Franklin
author_sort	Pablo Lanillos
title	Active strategies for multisensory conflict suppression in the virtual hand illusion
title_short	Active strategies for multisensory conflict suppression in the virtual hand illusion
title_full	Active strategies for multisensory conflict suppression in the virtual hand illusion
title_fullStr	Active strategies for multisensory conflict suppression in the virtual hand illusion
title_full_unstemmed	Active strategies for multisensory conflict suppression in the virtual hand illusion
title_sort	active strategies for multisensory conflict suppression in the virtual hand illusion
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/32709330efc040e5a1f703ad50fb2cf1
work_keys_str_mv	AT pablolanillos activestrategiesformultisensoryconflictsuppressioninthevirtualhandillusion AT saefranklin activestrategiesformultisensoryconflictsuppressioninthevirtualhandillusion AT antonellamaselli activestrategiesformultisensoryconflictsuppressioninthevirtualhandillusion AT davidwfranklin activestrategiesformultisensoryconflictsuppressioninthevirtualhandillusion
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Active strategies for multisensory conflict suppression in the virtual hand illusion

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