The endless visuomotor calibration of reach-to-grasp actions

Abstract It is reasonable to assume that when we grasp an object we carry out the movement based only on the currently available sensory information. Unfortunately, our senses are often prone to err. Here, we show that the visuomotor system exploits the mismatch between the predicted and sensory out...

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Autores principales:	Robert Volcic, Fulvio Domini
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Grip Aperture Sensory Prediction Errors Visuomotor Functions Visuomotor System Current Visual Information Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a23b5dbee8784b4b999e1b87a6495020
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id	oai:doaj.org-article:a23b5dbee8784b4b999e1b87a6495020
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spelling	oai:doaj.org-article:a23b5dbee8784b4b999e1b87a64950202021-12-02T11:40:46ZThe endless visuomotor calibration of reach-to-grasp actions10.1038/s41598-018-33009-62045-2322https://doaj.org/article/a23b5dbee8784b4b999e1b87a64950202018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-33009-6https://doaj.org/toc/2045-2322Abstract It is reasonable to assume that when we grasp an object we carry out the movement based only on the currently available sensory information. Unfortunately, our senses are often prone to err. Here, we show that the visuomotor system exploits the mismatch between the predicted and sensory outcomes of the immediately preceding action (sensory prediction error) to attain a degree of robustness against the fallibility of our perceptual processes. Participants performed reach-to-grasp movements toward objects presented at eye level at various distances. Grip aperture was affected by the object distance, even though both visual feedback of the hand and haptic feedback were provided. Crucially, grip aperture as well as the trajectory of the hand were systematically influenced also by the immediately preceding action. These results are well predicted by a model that modifies an internal state of the visuomotor system by adjusting the visuomotor mapping based on the sensory prediction errors. In sum, the visuomotor system appears to be in a constant fine-tuning process which makes the generation and control of grasping movements more resistant to interferences caused by our perceptual errors.Robert VolcicFulvio DominiNature PortfolioarticleGrip ApertureSensory Prediction ErrorsVisuomotor FunctionsVisuomotor SystemCurrent Visual InformationMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Grip Aperture Sensory Prediction Errors Visuomotor Functions Visuomotor System Current Visual Information Medicine R Science Q
spellingShingle	Grip Aperture Sensory Prediction Errors Visuomotor Functions Visuomotor System Current Visual Information Medicine R Science Q Robert Volcic Fulvio Domini The endless visuomotor calibration of reach-to-grasp actions
description	Abstract It is reasonable to assume that when we grasp an object we carry out the movement based only on the currently available sensory information. Unfortunately, our senses are often prone to err. Here, we show that the visuomotor system exploits the mismatch between the predicted and sensory outcomes of the immediately preceding action (sensory prediction error) to attain a degree of robustness against the fallibility of our perceptual processes. Participants performed reach-to-grasp movements toward objects presented at eye level at various distances. Grip aperture was affected by the object distance, even though both visual feedback of the hand and haptic feedback were provided. Crucially, grip aperture as well as the trajectory of the hand were systematically influenced also by the immediately preceding action. These results are well predicted by a model that modifies an internal state of the visuomotor system by adjusting the visuomotor mapping based on the sensory prediction errors. In sum, the visuomotor system appears to be in a constant fine-tuning process which makes the generation and control of grasping movements more resistant to interferences caused by our perceptual errors.
format	article
author	Robert Volcic Fulvio Domini
author_facet	Robert Volcic Fulvio Domini
author_sort	Robert Volcic
title	The endless visuomotor calibration of reach-to-grasp actions
title_short	The endless visuomotor calibration of reach-to-grasp actions
title_full	The endless visuomotor calibration of reach-to-grasp actions
title_fullStr	The endless visuomotor calibration of reach-to-grasp actions
title_full_unstemmed	The endless visuomotor calibration of reach-to-grasp actions
title_sort	endless visuomotor calibration of reach-to-grasp actions
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/a23b5dbee8784b4b999e1b87a6495020
work_keys_str_mv	AT robertvolcic theendlessvisuomotorcalibrationofreachtograspactions AT fulviodomini theendlessvisuomotorcalibrationofreachtograspactions AT robertvolcic endlessvisuomotorcalibrationofreachtograspactions AT fulviodomini endlessvisuomotorcalibrationofreachtograspactions
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The endless visuomotor calibration of reach-to-grasp actions

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