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Facial feedback effect on the sense of body ownership during the rubber hand illusion

The sense of body ownership, a feeling that one’s body belongs to the self, is an essential aspect of self-consciousness. Studies have focused on emotions and bodily states that could influence multisensory integration for the sense of body ownership. Based on the Facial Feedback Hypothesis, the pur...

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Autores principales: Kaneno, Yoshitaka, Ashida, Hiroshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10050436/
https://www.ncbi.nlm.nih.gov/pubmed/37007678
http://dx.doi.org/10.3389/fnhum.2023.976290
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author Kaneno, Yoshitaka
Ashida, Hiroshi
author_facet Kaneno, Yoshitaka
Ashida, Hiroshi
author_sort Kaneno, Yoshitaka
collection PubMed
description The sense of body ownership, a feeling that one’s body belongs to the self, is an essential aspect of self-consciousness. Studies have focused on emotions and bodily states that could influence multisensory integration for the sense of body ownership. Based on the Facial Feedback Hypothesis, the purpose of this study was to examine whether displaying specific facial expressions affects the rubber hand illusion. We hypothesized that the expression of a smiling face changes the emotional experience and facilitates the formation of a sense of body ownership. In the experiment, participants (n = 30) were asked to hold a wooden chopstick in their mouths to simulate smile, neutral, and disgusted facial expressions during the induction of the rubber hand illusion. The results did not support the hypothesis, showing that proprioceptive drift (an index of illusory experience) was enhanced when the subjects displayed a disgusted facial expression, while the subjective reports of the illusion were not affected. These results, together with the previous studies regarding the effect of positive emotions, suggest that bodily affective information, regardless of its valence, facilitates multisensory integration and could influence the conscious representation of the bodily self.
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spelling pubmed-100504362023-03-30 Facial feedback effect on the sense of body ownership during the rubber hand illusion Kaneno, Yoshitaka Ashida, Hiroshi Front Hum Neurosci Neuroscience The sense of body ownership, a feeling that one’s body belongs to the self, is an essential aspect of self-consciousness. Studies have focused on emotions and bodily states that could influence multisensory integration for the sense of body ownership. Based on the Facial Feedback Hypothesis, the purpose of this study was to examine whether displaying specific facial expressions affects the rubber hand illusion. We hypothesized that the expression of a smiling face changes the emotional experience and facilitates the formation of a sense of body ownership. In the experiment, participants (n = 30) were asked to hold a wooden chopstick in their mouths to simulate smile, neutral, and disgusted facial expressions during the induction of the rubber hand illusion. The results did not support the hypothesis, showing that proprioceptive drift (an index of illusory experience) was enhanced when the subjects displayed a disgusted facial expression, while the subjective reports of the illusion were not affected. These results, together with the previous studies regarding the effect of positive emotions, suggest that bodily affective information, regardless of its valence, facilitates multisensory integration and could influence the conscious representation of the bodily self. Frontiers Media S.A. 2023-03-15 /pmc/articles/PMC10050436/ /pubmed/37007678 http://dx.doi.org/10.3389/fnhum.2023.976290 Text en Copyright © 2023 Kaneno and Ashida. 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 Neuroscience
Kaneno, Yoshitaka
Ashida, Hiroshi
Facial feedback effect on the sense of body ownership during the rubber hand illusion
title Facial feedback effect on the sense of body ownership during the rubber hand illusion
title_full Facial feedback effect on the sense of body ownership during the rubber hand illusion
title_fullStr Facial feedback effect on the sense of body ownership during the rubber hand illusion
title_full_unstemmed Facial feedback effect on the sense of body ownership during the rubber hand illusion
title_short Facial feedback effect on the sense of body ownership during the rubber hand illusion
title_sort facial feedback effect on the sense of body ownership during the rubber hand illusion
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10050436/
https://www.ncbi.nlm.nih.gov/pubmed/37007678
http://dx.doi.org/10.3389/fnhum.2023.976290
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