Body size perception in stroke patients with paresis.

Recent studies have suggested that people's intent and ability to act also can influence their perception of their bodies' peripersonal space. Vice versa one could assume that the inability to reach toward and grasp an object might have an impact on the subject's perception of reachin...

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Autores principales:	Azam Shahvaroughi-Farahani, Sally A Linkenauger, Betty J Mohler, Simone C Behrens, Katrin E Giel, Hans-Otto Karnath
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/34f55ab367274b84952b7adb64c1bd56
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spelling	oai:doaj.org-article:34f55ab367274b84952b7adb64c1bd562021-12-02T20:11:03ZBody size perception in stroke patients with paresis.1932-620310.1371/journal.pone.0252596https://doaj.org/article/34f55ab367274b84952b7adb64c1bd562021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0252596https://doaj.org/toc/1932-6203Recent studies have suggested that people's intent and ability to act also can influence their perception of their bodies' peripersonal space. Vice versa one could assume that the inability to reach toward and grasp an object might have an impact on the subject's perception of reaching distance. Here we tested this prediction by investigating body size and action capability perception of neurological patients suffering from arm paresis after stroke, comparing 32 right-brain-damaged patients (13 with left-sided arm paresis without additional spatial neglect, 10 with left-sided arm paresis and additional spatial neglect, 9 patients had neither arm paresis nor neglect) and 27 healthy controls. Nineteen of the group of right hemisphere stroke patients could be re-examined about five months after initial injury. Arm length was estimated in three different methodological approaches: explicit visual, explicit tactile/proprioceptive, and implicit reaching. Results fulfilled the working hypothesis. Patients with an arm paresis indeed perceived their bodies differently. We found a transient overestimation of the length of the contralesional, paretic arm after stroke. Body size and action capability perception for the extremities thus indeed seem to be tightly linked in humans.Azam Shahvaroughi-FarahaniSally A LinkenaugerBetty J MohlerSimone C BehrensKatrin E GielHans-Otto KarnathPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 6, p e0252596 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Azam Shahvaroughi-Farahani Sally A Linkenauger Betty J Mohler Simone C Behrens Katrin E Giel Hans-Otto Karnath Body size perception in stroke patients with paresis.
description	Recent studies have suggested that people's intent and ability to act also can influence their perception of their bodies' peripersonal space. Vice versa one could assume that the inability to reach toward and grasp an object might have an impact on the subject's perception of reaching distance. Here we tested this prediction by investigating body size and action capability perception of neurological patients suffering from arm paresis after stroke, comparing 32 right-brain-damaged patients (13 with left-sided arm paresis without additional spatial neglect, 10 with left-sided arm paresis and additional spatial neglect, 9 patients had neither arm paresis nor neglect) and 27 healthy controls. Nineteen of the group of right hemisphere stroke patients could be re-examined about five months after initial injury. Arm length was estimated in three different methodological approaches: explicit visual, explicit tactile/proprioceptive, and implicit reaching. Results fulfilled the working hypothesis. Patients with an arm paresis indeed perceived their bodies differently. We found a transient overestimation of the length of the contralesional, paretic arm after stroke. Body size and action capability perception for the extremities thus indeed seem to be tightly linked in humans.
format	article
author	Azam Shahvaroughi-Farahani Sally A Linkenauger Betty J Mohler Simone C Behrens Katrin E Giel Hans-Otto Karnath
author_facet	Azam Shahvaroughi-Farahani Sally A Linkenauger Betty J Mohler Simone C Behrens Katrin E Giel Hans-Otto Karnath
author_sort	Azam Shahvaroughi-Farahani
title	Body size perception in stroke patients with paresis.
title_short	Body size perception in stroke patients with paresis.
title_full	Body size perception in stroke patients with paresis.
title_fullStr	Body size perception in stroke patients with paresis.
title_full_unstemmed	Body size perception in stroke patients with paresis.
title_sort	body size perception in stroke patients with paresis.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/34f55ab367274b84952b7adb64c1bd56
work_keys_str_mv	AT azamshahvaroughifarahani bodysizeperceptioninstrokepatientswithparesis AT sallyalinkenauger bodysizeperceptioninstrokepatientswithparesis AT bettyjmohler bodysizeperceptioninstrokepatientswithparesis AT simonecbehrens bodysizeperceptioninstrokepatientswithparesis AT katrinegiel bodysizeperceptioninstrokepatientswithparesis AT hansottokarnath bodysizeperceptioninstrokepatientswithparesis
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Body size perception in stroke patients with paresis.

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