Seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.

During the procedure of prism adaptation, subjects execute pointing movements to visual targets under a lateral optical displacement: as consequence of the discrepancy between visual and proprioceptive inputs, their visuo-motor activity is characterized by pointing errors. The perception of such fin...

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Autores principales:	Roberta Ronchi, Patrice Revol, Masahiro Katayama, Yves Rossetti, Alessandro Farnè
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dc2af8f61ae647ce924a6006852bc355
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spelling	oai:doaj.org-article:dc2af8f61ae647ce924a6006852bc3552021-11-18T06:51:28ZSeeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.1932-620310.1371/journal.pone.0021070https://doaj.org/article/dc2af8f61ae647ce924a6006852bc3552011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21731649/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203During the procedure of prism adaptation, subjects execute pointing movements to visual targets under a lateral optical displacement: as consequence of the discrepancy between visual and proprioceptive inputs, their visuo-motor activity is characterized by pointing errors. The perception of such final errors triggers error-correction processes that eventually result into sensori-motor compensation, opposite to the prismatic displacement (i.e., after-effects). Here we tested whether the mere observation of erroneous pointing movements, similar to those executed during prism adaptation, is sufficient to produce adaptation-like after-effects. Neurotypical participants observed, from a first-person perspective, the examiner's arm making incorrect pointing movements that systematically overshot visual targets location to the right, thus simulating a rightward optical deviation. Three classical after-effect measures (proprioceptive, visual and visual-proprioceptive shift) were recorded before and after first-person's perspective observation of pointing errors. Results showed that mere visual exposure to an arm that systematically points on the right-side of a target (i.e., without error correction) produces a leftward after-effect, which mostly affects the observer's proprioceptive estimation of her body midline. In addition, being exposed to such a constant visual error induced in the observer the illusion "to feel" the seen movement. These findings indicate that it is possible to elicit sensori-motor after-effects by mere observation of movement errors.Roberta RonchiPatrice RevolMasahiro KatayamaYves RossettiAlessandro FarnèPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 6, p e21070 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Roberta Ronchi Patrice Revol Masahiro Katayama Yves Rossetti Alessandro Farnè Seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.
description	During the procedure of prism adaptation, subjects execute pointing movements to visual targets under a lateral optical displacement: as consequence of the discrepancy between visual and proprioceptive inputs, their visuo-motor activity is characterized by pointing errors. The perception of such final errors triggers error-correction processes that eventually result into sensori-motor compensation, opposite to the prismatic displacement (i.e., after-effects). Here we tested whether the mere observation of erroneous pointing movements, similar to those executed during prism adaptation, is sufficient to produce adaptation-like after-effects. Neurotypical participants observed, from a first-person perspective, the examiner's arm making incorrect pointing movements that systematically overshot visual targets location to the right, thus simulating a rightward optical deviation. Three classical after-effect measures (proprioceptive, visual and visual-proprioceptive shift) were recorded before and after first-person's perspective observation of pointing errors. Results showed that mere visual exposure to an arm that systematically points on the right-side of a target (i.e., without error correction) produces a leftward after-effect, which mostly affects the observer's proprioceptive estimation of her body midline. In addition, being exposed to such a constant visual error induced in the observer the illusion "to feel" the seen movement. These findings indicate that it is possible to elicit sensori-motor after-effects by mere observation of movement errors.
format	article
author	Roberta Ronchi Patrice Revol Masahiro Katayama Yves Rossetti Alessandro Farnè
author_facet	Roberta Ronchi Patrice Revol Masahiro Katayama Yves Rossetti Alessandro Farnè
author_sort	Roberta Ronchi
title	Seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.
title_short	Seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.
title_full	Seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.
title_fullStr	Seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.
title_full_unstemmed	Seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.
title_sort	seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/dc2af8f61ae647ce924a6006852bc355
work_keys_str_mv	AT robertaronchi seeingyourerroraltersmypointingobservingsystematicpointingerrorsinducessensorimotoraftereffects AT patricerevol seeingyourerroraltersmypointingobservingsystematicpointingerrorsinducessensorimotoraftereffects AT masahirokatayama seeingyourerroraltersmypointingobservingsystematicpointingerrorsinducessensorimotoraftereffects AT yvesrossetti seeingyourerroraltersmypointingobservingsystematicpointingerrorsinducessensorimotoraftereffects AT alessandrofarne seeingyourerroraltersmypointingobservingsystematicpointingerrorsinducessensorimotoraftereffects
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Seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects.

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