Cited by 164Tactile and Sensory InteractionsVisual perception and processing mechanismsMultisensory perception and integration

Neural substrate of body size: illusory feeling of shrinking of the waist.

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Ehrsson, H. Henrik, Kito, Tomonori, Sadato, Norihiro, Passingham, Richard E, Naito, Eiichi·2005·PLoS Biology

Abstract

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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Crossref · 10.1371/journal.pbio.0030412

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  • Experimentally-induced changes in the perceptual body image (perceived shape and size or posture of the body) have been related to the postcentral sulcus, intraparietal sulcus, insula, and inferior parietal lobule.

    “whereas experimentally‐induced changes in the perceptual body image (perceived shape and size or posture of the body) have been related to the postcentral sulcus, intraparietal sulcus, insula, and inferior parietal lobule (Ehrsson et al., 2005; Kavounoudias et al., 2008; Naito et al., 2017).”

    From Neural bases of the bodily self as revealed by electrical brain stimulation: A systematic review (2023) · cites this paper as Ehrsson et al., 2005

    The Discussion (page not provided) links experimentally induced changes in perceived waist size and shape to the postcentral and intraparietal sulci. It also reports inferior parietal activity during illusory hand movement, but says that activity was not specific to the shrinking-waist illusion; the cited passages do not link the insula to the illusion. This paper therefore supports only part of the region list. (LLM, conf=0.87)

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Research works printed but not linked: 2

  1. Graziano MS Botvinick MM Prinz W Hommel B How the brain represents the body: Insights from neurophysiology and psychology Common mechanisms in perception and action. Volume XIX, Attention and performance 2001 Oxford Oxford University Press 136 157
  2. Frackowiak RSJ Friston KJ Frith C Dolan R Price CJ Human brain function, 2nd ed 2004 San Diego (California) Academic Press 1,144 p

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Authors
Ehrsson, H. H., Kito, T., Sadato, N., Passingham, R. E., & Naito, E.
Affiliations
  • UCL Queen Square Institute of Neurology (GB)
  • Kyoto University (JP)
  • National Institute for Physiological Sciences (JP)
  • University of Oxford (GB)
Corresponding author
Ehrsson, H. Henrik
Venue
PLoS Biology
Published
2005-11-29
Volume
3
Issue
12
Pages
e412
ISSN
  • 1544-9173 (ISSN-L)
  • 1545-7885
OpenAlex
W2161414569
Cited by
164
References
50
Citations by year
2026: 2 · 2025: 6 · 2024: 5 · 2023: 7 · 2022: 6 · 2021: 10 · 2020: 7 · 2019: 8 · 2018: 1 · 2017: 8 · 2016: 11 · 2015: 12 · 2014: 8 · 2013: 11 · 2012: 14
FWCI
3.48
Type
journal article
Language
en
Open access
Locations
  • PLoS Biology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • Wellcome Trust
  • Ministry of Education, Culture, Sports, Science and Technology
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
Keywords
body image, body size perception, somatosensory cortex, postcentral sulcus, intraparietal sulcus, parietal cortex, neural correlates of perception
MeSH terms
Body Image, Brain, Emotions, Hand, Humans, Illusions, Perception, Psychophysics, Tomography Scanners, X-Ray Computed, Body Size

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