Know thyself: behavioral evidence for a structural representation of the human body.

<h4>Background</h4>Representing one's own body is often viewed as a basic form of self-awareness. However, little is known about structural representations of the body in the brain.<h4>Methods and findings</h4>We developed an inter-manual version of the classical "i...

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Autores principales:	Elena Rusconi, Mirandola Gonzaga, Michela Adriani, Christoph Braun, Patrick Haggard
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2009
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/569cbb9c578346cc848b9c96c7e2ffa4
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spelling	oai:doaj.org-article:569cbb9c578346cc848b9c96c7e2ffa42021-11-25T06:22:53ZKnow thyself: behavioral evidence for a structural representation of the human body.1932-620310.1371/journal.pone.0005418https://doaj.org/article/569cbb9c578346cc848b9c96c7e2ffa42009-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19412538/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Representing one's own body is often viewed as a basic form of self-awareness. However, little is known about structural representations of the body in the brain.<h4>Methods and findings</h4>We developed an inter-manual version of the classical "in-between" finger gnosis task: participants judged whether the number of untouched fingers between two touched fingers was the same on both hands, or different. We thereby dissociated structural knowledge about fingers, specifying their order and relative position within a hand, from tactile sensory codes. Judgments following stimulation on homologous fingers were consistently more accurate than trials with no or partial homology. Further experiments showed that structural representations are more enduring than purely sensory codes, are used even when number of fingers is irrelevant to the task, and moreover involve an allocentric representation of finger order, independent of hand posture.<h4>Conclusions</h4>Our results suggest the existence of an allocentric representation of body structure at higher stages of the somatosensory processing pathway, in addition to primary sensory representation.Elena RusconiMirandola GonzagaMichela AdrianiChristoph BraunPatrick HaggardPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 4, Iss 5, p e5418 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Elena Rusconi Mirandola Gonzaga Michela Adriani Christoph Braun Patrick Haggard Know thyself: behavioral evidence for a structural representation of the human body.
description	<h4>Background</h4>Representing one's own body is often viewed as a basic form of self-awareness. However, little is known about structural representations of the body in the brain.<h4>Methods and findings</h4>We developed an inter-manual version of the classical "in-between" finger gnosis task: participants judged whether the number of untouched fingers between two touched fingers was the same on both hands, or different. We thereby dissociated structural knowledge about fingers, specifying their order and relative position within a hand, from tactile sensory codes. Judgments following stimulation on homologous fingers were consistently more accurate than trials with no or partial homology. Further experiments showed that structural representations are more enduring than purely sensory codes, are used even when number of fingers is irrelevant to the task, and moreover involve an allocentric representation of finger order, independent of hand posture.<h4>Conclusions</h4>Our results suggest the existence of an allocentric representation of body structure at higher stages of the somatosensory processing pathway, in addition to primary sensory representation.
format	article
author	Elena Rusconi Mirandola Gonzaga Michela Adriani Christoph Braun Patrick Haggard
author_facet	Elena Rusconi Mirandola Gonzaga Michela Adriani Christoph Braun Patrick Haggard
author_sort	Elena Rusconi
title	Know thyself: behavioral evidence for a structural representation of the human body.
title_short	Know thyself: behavioral evidence for a structural representation of the human body.
title_full	Know thyself: behavioral evidence for a structural representation of the human body.
title_fullStr	Know thyself: behavioral evidence for a structural representation of the human body.
title_full_unstemmed	Know thyself: behavioral evidence for a structural representation of the human body.
title_sort	know thyself: behavioral evidence for a structural representation of the human body.
publisher	Public Library of Science (PLoS)
publishDate	2009
url	https://doaj.org/article/569cbb9c578346cc848b9c96c7e2ffa4
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Know thyself: behavioral evidence for a structural representation of the human body.

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