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Neural Substrate of Body Size: Illusory Feeling of Shrinking of the Waist

The perception of the size and shape of one's body (body image) is a fundamental aspect of how we experience ourselves. We studied the neural correlates underlying perceived changes in the relative size of body parts by using a perceptual illusion in which participants felt that their waist was...

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Detalles Bibliográficos
Autores principales: Ehrsson, H. Henrik, Kito, Tomonori, Sadato, Norihiro, Passingham, Richard E, Naito, Eiichi
Formato: Texto
Lenguaje:English
Publicado: Public Library of Science 2005
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1287503/
https://www.ncbi.nlm.nih.gov/pubmed/16336049
http://dx.doi.org/10.1371/journal.pbio.0030412
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author Ehrsson, H. Henrik
Kito, Tomonori
Sadato, Norihiro
Passingham, Richard E
Naito, Eiichi
author_facet Ehrsson, H. Henrik
Kito, Tomonori
Sadato, Norihiro
Passingham, Richard E
Naito, Eiichi
author_sort Ehrsson, H. Henrik
collection PubMed
description The perception of the size and shape of one's body (body image) is a fundamental aspect of how we experience ourselves. We studied the neural correlates underlying perceived changes in the relative size of body parts by using a perceptual illusion in which participants felt that their waist was shrinking. We scanned the brains of the participants using functional magnetic resonance imaging. We found that activity in the cortices lining the left postcentral sulcus and the anterior part of the intraparietal sulcus reflected the illusion of waist shrinking, and that this activity was correlated with the reported degree of shrinking. These results suggest that the perceived changes in the size and shape of body parts are mediated by hierarchically higher-order somatosensory areas in the parietal cortex. Based on this finding we suggest that relative size of body parts is computed by the integration of more elementary somatic signals from different body segments.
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spelling pubmed-12875032005-11-29 Neural Substrate of Body Size: Illusory Feeling of Shrinking of the Waist Ehrsson, H. Henrik Kito, Tomonori Sadato, Norihiro Passingham, Richard E Naito, Eiichi PLoS Biol Research Article The perception of the size and shape of one's body (body image) is a fundamental aspect of how we experience ourselves. We studied the neural correlates underlying perceived changes in the relative size of body parts by using a perceptual illusion in which participants felt that their waist was shrinking. We scanned the brains of the participants using functional magnetic resonance imaging. We found that activity in the cortices lining the left postcentral sulcus and the anterior part of the intraparietal sulcus reflected the illusion of waist shrinking, and that this activity was correlated with the reported degree of shrinking. These results suggest that the perceived changes in the size and shape of body parts are mediated by hierarchically higher-order somatosensory areas in the parietal cortex. Based on this finding we suggest that relative size of body parts is computed by the integration of more elementary somatic signals from different body segments. Public Library of Science 2005-12 2005-11-29 /pmc/articles/PMC1287503/ /pubmed/16336049 http://dx.doi.org/10.1371/journal.pbio.0030412 Text en Copyright: © 2005 Ehrsson et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Ehrsson, H. Henrik
Kito, Tomonori
Sadato, Norihiro
Passingham, Richard E
Naito, Eiichi
Neural Substrate of Body Size: Illusory Feeling of Shrinking of the Waist
title Neural Substrate of Body Size: Illusory Feeling of Shrinking of the Waist
title_full Neural Substrate of Body Size: Illusory Feeling of Shrinking of the Waist
title_fullStr Neural Substrate of Body Size: Illusory Feeling of Shrinking of the Waist
title_full_unstemmed Neural Substrate of Body Size: Illusory Feeling of Shrinking of the Waist
title_short Neural Substrate of Body Size: Illusory Feeling of Shrinking of the Waist
title_sort neural substrate of body size: illusory feeling of shrinking of the waist
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1287503/
https://www.ncbi.nlm.nih.gov/pubmed/16336049
http://dx.doi.org/10.1371/journal.pbio.0030412
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