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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...
Autores principales: | , , , , |
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Formato: | Texto |
Lenguaje: | English |
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Public Library of Science
2005
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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. |
format | Text |
id | pubmed-1287503 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2005 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
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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