Disruption of spatial task performance in anorexia nervosa.

In anorexia nervosa (AN), body distortions have been associated with parietal cortex (PC) dysfunction. The PC is the anatomical substrate for a supramodal reference framework involved in spatial orientation constancy. Here, we sought to evaluate spatial orientation constancy and the perception of bo...

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Autores principales:	Dewi Guardia, Aurélie Carey, Olivier Cottencin, Pierre Thomas, Marion Luyat
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bd230cb92fb643f2a7955bcd4cbb7dc7
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id	oai:doaj.org-article:bd230cb92fb643f2a7955bcd4cbb7dc7
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spelling	oai:doaj.org-article:bd230cb92fb643f2a7955bcd4cbb7dc72021-11-18T08:00:48ZDisruption of spatial task performance in anorexia nervosa.1932-620310.1371/journal.pone.0054928https://doaj.org/article/bd230cb92fb643f2a7955bcd4cbb7dc72013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23349990/?tool=EBIhttps://doaj.org/toc/1932-6203In anorexia nervosa (AN), body distortions have been associated with parietal cortex (PC) dysfunction. The PC is the anatomical substrate for a supramodal reference framework involved in spatial orientation constancy. Here, we sought to evaluate spatial orientation constancy and the perception of body orientation in AN patients. In the present study, we investigated the effect of passive lateral body inclination on the visual and tactile subjective vertical (SV) and body Z-axis in 25 AN patients and 25 healthy controls. Subjects performed visual- and tactile-spatial judgments of axis orientations in an upright position and tilted 90° clockwise or counterclockwise. We observed a significant deviation of the tactile and visual SV towards the body (an A-effect) under tilted conditions, suggesting a multisensory impairment in spatial orientation. Deviation of the Z-axis in the direction of the tilt was also observed in the AN group. The greater A-effect in AN patients may reflect reduced interoceptive awareness and thus inadequate consideration of gravitational inflow. Furthermore, marked body weight loss could decrease the somatosensory inputs required for spatial orientation. Our study results suggest that spatial references are impaired in AN. This may be due to particular integration of visual, tactile and gravitational information (e.g. vestibular and proprioceptive cues) in the PC.Dewi GuardiaAurélie CareyOlivier CottencinPierre ThomasMarion LuyatPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 1, p e54928 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dewi Guardia Aurélie Carey Olivier Cottencin Pierre Thomas Marion Luyat Disruption of spatial task performance in anorexia nervosa.
description	In anorexia nervosa (AN), body distortions have been associated with parietal cortex (PC) dysfunction. The PC is the anatomical substrate for a supramodal reference framework involved in spatial orientation constancy. Here, we sought to evaluate spatial orientation constancy and the perception of body orientation in AN patients. In the present study, we investigated the effect of passive lateral body inclination on the visual and tactile subjective vertical (SV) and body Z-axis in 25 AN patients and 25 healthy controls. Subjects performed visual- and tactile-spatial judgments of axis orientations in an upright position and tilted 90° clockwise or counterclockwise. We observed a significant deviation of the tactile and visual SV towards the body (an A-effect) under tilted conditions, suggesting a multisensory impairment in spatial orientation. Deviation of the Z-axis in the direction of the tilt was also observed in the AN group. The greater A-effect in AN patients may reflect reduced interoceptive awareness and thus inadequate consideration of gravitational inflow. Furthermore, marked body weight loss could decrease the somatosensory inputs required for spatial orientation. Our study results suggest that spatial references are impaired in AN. This may be due to particular integration of visual, tactile and gravitational information (e.g. vestibular and proprioceptive cues) in the PC.
format	article
author	Dewi Guardia Aurélie Carey Olivier Cottencin Pierre Thomas Marion Luyat
author_facet	Dewi Guardia Aurélie Carey Olivier Cottencin Pierre Thomas Marion Luyat
author_sort	Dewi Guardia
title	Disruption of spatial task performance in anorexia nervosa.
title_short	Disruption of spatial task performance in anorexia nervosa.
title_full	Disruption of spatial task performance in anorexia nervosa.
title_fullStr	Disruption of spatial task performance in anorexia nervosa.
title_full_unstemmed	Disruption of spatial task performance in anorexia nervosa.
title_sort	disruption of spatial task performance in anorexia nervosa.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/bd230cb92fb643f2a7955bcd4cbb7dc7
work_keys_str_mv	AT dewiguardia disruptionofspatialtaskperformanceinanorexianervosa AT aureliecarey disruptionofspatialtaskperformanceinanorexianervosa AT oliviercottencin disruptionofspatialtaskperformanceinanorexianervosa AT pierrethomas disruptionofspatialtaskperformanceinanorexianervosa AT marionluyat disruptionofspatialtaskperformanceinanorexianervosa
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Disruption of spatial task performance in anorexia nervosa.

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