Illusory Body Ownership Affects the Cortical Response to Vicarious Somatosensation.

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License: CC BY 4.0
Serval ID
serval:BIB_E803D984575C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Illusory Body Ownership Affects the Cortical Response to Vicarious Somatosensation.
Journal
Cerebral cortex
Author(s)
Pamplona GSP, Salgado JAD, Staempfli P., Seifritz E., Gassert R., Ionta S.
ISSN
1460-2199 (Electronic)
ISSN-L
1047-3211
Publication state
Published
Issued date
10/01/2022
Peer-reviewed
Oui
Volume
32
Number
2
Pages
312-328
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Fundamental human feelings such as body ownership ("this" body is "my" body) and vicariousness (first-person-like experience of events occurring to others) are based on multisensory integration. Behavioral links between body ownership and vicariousness have been shown, but the neural underpinnings remain largely unexplored. To fill this gap, we investigated the neural effects of altered body ownership on vicarious somatosensation. While recording functional brain imaging data, first, we altered participants' body ownership by robotically delivering tactile stimulations ("tactile" stroking) in synchrony or not with videos of a virtual hand being brushed ("visual" stroking). Then, we manipulated vicarious somatosensation by showing videos of the virtual hand being touched by a syringe's plunger (touch) or needle (pain). Only after the alteration of body ownership (synchronous visuo-tactile stroking) and specifically during late epochs of vicarious somatosensation, vicarious pain was associated with lower activation in premotor and anterior cingulate cortices with respect to vicarious touch. At the methodological level, the present study highlights the importance of the neural response's temporal evolution. At the theoretical level, it shows that the higher-level (cognitive) impact of a lower-level (sensory) body-related processing (visuo-tactile) is not limited to body ownership but also extends to other psychological body-related domains, such as vicarious somatosensation.
Keywords
affective, brain, fMRI, multisensory, pain, robotics, sensorimotor, touch
Pubmed
Web of science
Open Access
Yes
Create date
28/07/2021 11:45
Last modification date
23/11/2022 8:16
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