Cited by 402Virtual Reality Applications and ImpactsVisual perception and processing mechanismsMultisensory perception and integration

Being Barbie: the size of one’s own body determines the perceived size of the world.

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van der Hoort, Björn, Guterstam, Arvid, Ehrsson, H. Henrik·2011·PLoS ONE

Abstract

A classical question in philosophy and psychology is if the sense of one's body influences how one visually perceives the world. Several theoreticians have suggested that our own body serves as a fundamental reference in visual perception of sizes and distances, although compelling experimental evidence for this hypothesis is lacking. In contrast, modern textbooks typically explain the perception of object size and distance by the combination of information from different visual cues. Here, we describe full body illusions in which subjects experience the ownership of a doll's body (80 cm or 30 cm) and a giant's body (400 cm) and use these as tools to demonstrate that the size of one's sensed own body directly influences the perception of object size and distance. These effects were quantified in ten separate experiments with complementary verbal, questionnaire, manual, walking, and physiological measures. When participants experienced the tiny body as their own, they perceived objects to be larger and farther away, and when they experienced the large-body illusion, they perceived objects to be smaller and nearer. Importantly, despite identical retinal input, this "body size effect" was greater when the participants experienced a sense of ownership of the artificial bodies compared to a control condition in which ownership was disrupted. These findings are fundamentally important as they suggest a causal relationship between the representations of body space and external space. Thus, our own body size affects how we perceive the world.

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  1. [40]Ehrsson HH Spence C Passingham RE 2004 That's my hand! Activity in premotor cortex reflects feeling of ownership of a limb. Science 305 875 877 15232072

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Authors
van der Hoort, B., Guterstam, A., & Ehrsson, H. H.
Affiliations
Karolinska Institutet (SE)
Corresponding author
Ehrsson, H. Henrik
Venue
PLoS ONE
Published
2011-05-25
Volume
6
Issue
5
Pages
e20195
ISSN
1932-6203 (ISSN-L)
OpenAlex
W1978014948
Cited by
402
References
62
Citations by year
2026: 17 · 2025: 19 · 2024: 26 · 2023: 14 · 2022: 62 · 2021: 28 · 2020: 35 · 2019: 28 · 2018: 40 · 2017: 35 · 2016: 14 · 2015: 30 · 2014: 25 · 2013: 16 · 2012: 10
FWCI
30.51
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • James S. McDonnell Foundation
  • Stiftelsen för Strategisk Forskning
Topics
  • Physical Sciences › Computer Science › Human-Computer Interaction › Virtual Reality Applications and Impacts
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
Keywords
body size, body ownership, body illusions, object size perception, distance perception, visual perception, body schema, body space, external space, self-perception
MeSH terms
Adult, Body Image, Female, Humans, Illusions, Male, Surveys and Questionnaires, Self Concept, Size Perception, Visual Perception, Body Size, Young Adult

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