Abrupt visibility modifications affect specific subjective (not objective) aspects of body ownership.

Details

Serval ID
serval:BIB_BCDC8C7EC9D6
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Abrupt visibility modifications affect specific subjective (not objective) aspects of body ownership.
Journal
Acta psychologica
Author(s)
Pamplona G., Gruaz Q., Mauron K., Ionta S.
ISSN
1873-6297 (Electronic)
ISSN-L
0001-6918
Publication state
Published
Issued date
09/2022
Peer-reviewed
Oui
Volume
229
Pages
103672
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
The sense of body ownership builds on proper multisensory integration mechanisms. The Rubber-Hand Illusion (RHI) paradigm exploits a visuo-tactile multisensory conflict to induce illusory body ownership toward a fake hand, assessed by multidimensional subjective ratings and univocal objective measurements. Considering the controversy as to whether viewing the rubber hand is necessary or not to induce the illusion, we investigated the effects of targeted manipulations of visibility on subjective and objective aspects of the RHI. To this aim, we collected questionnaire and proprioceptive drift data from thirty participants receiving visuo-tactile stimulation in a setup that allowed for increasing and decreasing the visibility (illumination) of the rubber hand. We found that specific subjective ratings (Movement and Loss of Ownership) were sensitive to the interaction between rubber hand's visibility and illusory ownership. The interaction was not significant for the Embodiment subjective component and for the objective one (proprioceptive drift). Since different degrees of visibility did not differentially affect the RHI, these findings highlight that relatively abrupt changes in the visibility of the rubber hand can differentially impact subjective versus objective components of body ownership. This understanding may be critical for neuroscientific theories on the relationship between multisensory integration and body consciousness.
Keywords
Body Image, Hand, Humans, Illusions, Ownership, Proprioception, Touch Perception, Visual Perception, Body representation, Multisensory, Rubber hand illusion, Visuo-tactile
Pubmed
Web of science
Open Access
Yes
Create date
02/08/2022 14:23
Last modification date
09/03/2023 7:49
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