The disappearing hand: vestibular stimulation does not improve hand localisation.

Details

Serval ID
serval:BIB_32A7DFABA6D4
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The disappearing hand: vestibular stimulation does not improve hand localisation.
Journal
PeerJ
Author(s)
Grabherr L., Russek L.N., Bellan V., Shohag M., Camfferman D., Moseley G.L.
ISSN
2167-8359 (Print)
ISSN-L
2167-8359
Publication state
Published
Issued date
2019
Peer-reviewed
Oui
Volume
7
Pages
e7201
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
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.
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.
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.
Keywords
Bodily self-consciousness, Caloric vestibular stimulation, Multisensory illusion, Proprioception, Self-location, Vestibular system
Pubmed
Web of science
Open Access
Yes
Create date
16/08/2019 21:12
Last modification date
20/08/2019 13:18
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