Dynamic temporal modulation of somatosensory processing during reaching

Abstract Sensorimotor control of human action integrates feedforward policies that predict future body states with online sensory feedback. These predictions lead to a suppression of the associated feedback signals. Here, we examine whether somatosensory processing throughout a goal-directed movemen...

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Autores principales:	Dimitris Voudouris, Katja Fiehler
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/04fa430e804e42feb09179617263b254
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id	oai:doaj.org-article:04fa430e804e42feb09179617263b254
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spelling	oai:doaj.org-article:04fa430e804e42feb09179617263b2542021-12-02T15:23:28ZDynamic temporal modulation of somatosensory processing during reaching10.1038/s41598-021-81156-02045-2322https://doaj.org/article/04fa430e804e42feb09179617263b2542021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81156-0https://doaj.org/toc/2045-2322Abstract Sensorimotor control of human action integrates feedforward policies that predict future body states with online sensory feedback. These predictions lead to a suppression of the associated feedback signals. Here, we examine whether somatosensory processing throughout a goal-directed movement is constantly suppressed or dynamically tuned so that online feedback processing is enhanced at critical moments of the movement. Participants reached towards their other hand in the absence of visual input and detected a probing tactile stimulus on their moving or static hand. Somatosensory processing on the moving hand was dynamically tuned over the time course of reaching, being hampered in early and late stages of the movement, but, interestingly, recovering around the time of maximal speed. This novel finding of temporal somatosensory tuning was further corroborated in a second experiment, in which larger movement amplitudes shifted the absolute time of maximal speed later in the movement. We further show that the release from suppression on the moving limb was temporally coupled with enhanced somatosensory processing on the target hand. We discuss these results in the context of optimal feedforward control and suggest that somatosensory processing is dynamically tuned during the time course of reaching by enhancing sensory processing at critical moments of the movement.Dimitris VoudourisKatja FiehlerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dimitris Voudouris Katja Fiehler Dynamic temporal modulation of somatosensory processing during reaching
description	Abstract Sensorimotor control of human action integrates feedforward policies that predict future body states with online sensory feedback. These predictions lead to a suppression of the associated feedback signals. Here, we examine whether somatosensory processing throughout a goal-directed movement is constantly suppressed or dynamically tuned so that online feedback processing is enhanced at critical moments of the movement. Participants reached towards their other hand in the absence of visual input and detected a probing tactile stimulus on their moving or static hand. Somatosensory processing on the moving hand was dynamically tuned over the time course of reaching, being hampered in early and late stages of the movement, but, interestingly, recovering around the time of maximal speed. This novel finding of temporal somatosensory tuning was further corroborated in a second experiment, in which larger movement amplitudes shifted the absolute time of maximal speed later in the movement. We further show that the release from suppression on the moving limb was temporally coupled with enhanced somatosensory processing on the target hand. We discuss these results in the context of optimal feedforward control and suggest that somatosensory processing is dynamically tuned during the time course of reaching by enhancing sensory processing at critical moments of the movement.
format	article
author	Dimitris Voudouris Katja Fiehler
author_facet	Dimitris Voudouris Katja Fiehler
author_sort	Dimitris Voudouris
title	Dynamic temporal modulation of somatosensory processing during reaching
title_short	Dynamic temporal modulation of somatosensory processing during reaching
title_full	Dynamic temporal modulation of somatosensory processing during reaching
title_fullStr	Dynamic temporal modulation of somatosensory processing during reaching
title_full_unstemmed	Dynamic temporal modulation of somatosensory processing during reaching
title_sort	dynamic temporal modulation of somatosensory processing during reaching
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/04fa430e804e42feb09179617263b254
work_keys_str_mv	AT dimitrisvoudouris dynamictemporalmodulationofsomatosensoryprocessingduringreaching AT katjafiehler dynamictemporalmodulationofsomatosensoryprocessingduringreaching
_version_	1718387243493621760

Dynamic temporal modulation of somatosensory processing during reaching

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