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Body Ownership of Anatomically Implausible Hands in Virtual Reality
Manipulating sensory and motor cues can cause an illusionary perception of ownership of a fake body part. Presumably, the illusion can work as long as the false body part’s position and appearance are anatomically plausible. Here, we introduce an illusion that challenges past assumptions on body own...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8595134/ https://www.ncbi.nlm.nih.gov/pubmed/34803631 http://dx.doi.org/10.3389/fnhum.2021.713931 |
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author | Yizhar, Or Giron, Jonathan Wenger, Mohr Chetrit, Debbie Ostrin, Gilad Friedman, Doron Amedi, Amir |
author_facet | Yizhar, Or Giron, Jonathan Wenger, Mohr Chetrit, Debbie Ostrin, Gilad Friedman, Doron Amedi, Amir |
author_sort | Yizhar, Or |
collection | PubMed |
description | Manipulating sensory and motor cues can cause an illusionary perception of ownership of a fake body part. Presumably, the illusion can work as long as the false body part’s position and appearance are anatomically plausible. Here, we introduce an illusion that challenges past assumptions on body ownership. We used virtual reality to switch and mirror participants’ views of their hands. When a participant moves their physical hand, they see the incongruent virtual hand moving. The result is an anatomically implausible configuration of the fake hand. Despite the hand switch, participants reported significant body ownership sensations over the virtual hands. In the first between-group experiment, we found that the strength of body ownership over the incongruent hands was similar to that of congruent hands. Whereas, in the second within-group experiment, anatomical incongruency significantly decreased body ownership. Still, participants reported significant body ownership sensations of the switched hands. Curiously, we found that perceived levels of agency mediate the effect of anatomical congruency on body ownership. These findings offer a fresh perspective on the relationship between anatomical plausibility and assumed body ownership. We propose that goal-directed and purposeful actions can override anatomical plausibility constraints and discuss this in the context of the immersive properties of virtual reality. |
format | Online Article Text |
id | pubmed-8595134 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-85951342021-11-18 Body Ownership of Anatomically Implausible Hands in Virtual Reality Yizhar, Or Giron, Jonathan Wenger, Mohr Chetrit, Debbie Ostrin, Gilad Friedman, Doron Amedi, Amir Front Hum Neurosci Human Neuroscience Manipulating sensory and motor cues can cause an illusionary perception of ownership of a fake body part. Presumably, the illusion can work as long as the false body part’s position and appearance are anatomically plausible. Here, we introduce an illusion that challenges past assumptions on body ownership. We used virtual reality to switch and mirror participants’ views of their hands. When a participant moves their physical hand, they see the incongruent virtual hand moving. The result is an anatomically implausible configuration of the fake hand. Despite the hand switch, participants reported significant body ownership sensations over the virtual hands. In the first between-group experiment, we found that the strength of body ownership over the incongruent hands was similar to that of congruent hands. Whereas, in the second within-group experiment, anatomical incongruency significantly decreased body ownership. Still, participants reported significant body ownership sensations of the switched hands. Curiously, we found that perceived levels of agency mediate the effect of anatomical congruency on body ownership. These findings offer a fresh perspective on the relationship between anatomical plausibility and assumed body ownership. We propose that goal-directed and purposeful actions can override anatomical plausibility constraints and discuss this in the context of the immersive properties of virtual reality. Frontiers Media S.A. 2021-11-03 /pmc/articles/PMC8595134/ /pubmed/34803631 http://dx.doi.org/10.3389/fnhum.2021.713931 Text en Copyright © 2021 Yizhar, Giron, Wenger, Chetrit, Ostrin, Friedman and Amedi. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Human Neuroscience Yizhar, Or Giron, Jonathan Wenger, Mohr Chetrit, Debbie Ostrin, Gilad Friedman, Doron Amedi, Amir Body Ownership of Anatomically Implausible Hands in Virtual Reality |
title | Body Ownership of Anatomically Implausible Hands in Virtual Reality |
title_full | Body Ownership of Anatomically Implausible Hands in Virtual Reality |
title_fullStr | Body Ownership of Anatomically Implausible Hands in Virtual Reality |
title_full_unstemmed | Body Ownership of Anatomically Implausible Hands in Virtual Reality |
title_short | Body Ownership of Anatomically Implausible Hands in Virtual Reality |
title_sort | body ownership of anatomically implausible hands in virtual reality |
topic | Human Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8595134/ https://www.ncbi.nlm.nih.gov/pubmed/34803631 http://dx.doi.org/10.3389/fnhum.2021.713931 |
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