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The disappearing hand: vestibular stimulation does not improve hand localisation

BACKGROUND: Bodily self-consciousness depends on the coherent integration of sensory information. In addition to visual and somatosensory information processing, vestibular contributions have been proposed and investigated. Vestibular information seems especially important for self-location, but rem...

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Autores principales: Grabherr, Luzia, Russek, Leslie N., Bellan, Valeria, Shohag, Mohammad, Camfferman, Danny, Moseley, G. Lorimer
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6662564/
https://www.ncbi.nlm.nih.gov/pubmed/31388469
http://dx.doi.org/10.7717/peerj.7201
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author Grabherr, Luzia
Russek, Leslie N.
Bellan, Valeria
Shohag, Mohammad
Camfferman, Danny
Moseley, G. Lorimer
author_facet Grabherr, Luzia
Russek, Leslie N.
Bellan, Valeria
Shohag, Mohammad
Camfferman, Danny
Moseley, G. Lorimer
author_sort Grabherr, Luzia
collection PubMed
description BACKGROUND: Bodily self-consciousness depends on the coherent integration of sensory information. In addition to visual and somatosensory information processing, vestibular contributions have been proposed and investigated. Vestibular information seems especially important for self-location, but remains difficult to study. METHODS: This randomised controlled experiment used the MIRAGE multisensory illusion box to induce a conflict between the visually- and proprioceptively-encoded position of one hand. Over time, the perceived location of the hand slowly shifts, due to the fact that proprioceptive input is progressively weighted more heavily than the visual input. We hypothesised that left cold caloric vestibular stimulation (CVS) augments this shift in hand localisation. RESULTS: The results from 24 healthy participants do not support our hypothesis: CVS had no effect on the estimations with which the perceived position of the hand shifted from the visually- to the proprioceptively-encoded position. Participants were more likely to report that their hand was ‘no longer there’ after CVS. Taken together, neither the physical nor the subjective data provide evidence for vestibular enhanced self-location.
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spelling pubmed-66625642019-08-06 The disappearing hand: vestibular stimulation does not improve hand localisation Grabherr, Luzia Russek, Leslie N. Bellan, Valeria Shohag, Mohammad Camfferman, Danny Moseley, G. Lorimer PeerJ Neuroscience BACKGROUND: Bodily self-consciousness depends on the coherent integration of sensory information. In addition to visual and somatosensory information processing, vestibular contributions have been proposed and investigated. Vestibular information seems especially important for self-location, but remains difficult to study. METHODS: This randomised controlled experiment used the MIRAGE multisensory illusion box to induce a conflict between the visually- and proprioceptively-encoded position of one hand. Over time, the perceived location of the hand slowly shifts, due to the fact that proprioceptive input is progressively weighted more heavily than the visual input. We hypothesised that left cold caloric vestibular stimulation (CVS) augments this shift in hand localisation. RESULTS: The results from 24 healthy participants do not support our hypothesis: CVS had no effect on the estimations with which the perceived position of the hand shifted from the visually- to the proprioceptively-encoded position. Participants were more likely to report that their hand was ‘no longer there’ after CVS. Taken together, neither the physical nor the subjective data provide evidence for vestibular enhanced self-location. PeerJ Inc. 2019-07-26 /pmc/articles/PMC6662564/ /pubmed/31388469 http://dx.doi.org/10.7717/peerj.7201 Text en © 2019 Grabherr et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Neuroscience
Grabherr, Luzia
Russek, Leslie N.
Bellan, Valeria
Shohag, Mohammad
Camfferman, Danny
Moseley, G. Lorimer
The disappearing hand: vestibular stimulation does not improve hand localisation
title The disappearing hand: vestibular stimulation does not improve hand localisation
title_full The disappearing hand: vestibular stimulation does not improve hand localisation
title_fullStr The disappearing hand: vestibular stimulation does not improve hand localisation
title_full_unstemmed The disappearing hand: vestibular stimulation does not improve hand localisation
title_short The disappearing hand: vestibular stimulation does not improve hand localisation
title_sort disappearing hand: vestibular stimulation does not improve hand localisation
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6662564/
https://www.ncbi.nlm.nih.gov/pubmed/31388469
http://dx.doi.org/10.7717/peerj.7201
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