Shared neurocognitive mechanisms of attenuating self-touch and illusory self-touch.
body ownership
sense of agency
sensory attenuation
supplementary motor area
transcranial magnetic stimulation
Journal
Social cognitive and affective neuroscience
ISSN: 1749-5024
Titre abrégé: Soc Cogn Affect Neurosci
Pays: England
ID NLM: 101288795
Informations de publication
Date de publication:
13 02 2019
13 02 2019
Historique:
received:
26
06
2018
revised:
16
11
2018
accepted:
12
01
2019
pubmed:
17
1
2019
medline:
7
1
2020
entrez:
17
1
2019
Statut:
ppublish
Résumé
Despite the fact that any successful achievement of willed actions necessarily entails the sense of body ownership (the feeling of owning the moving body parts), it is still unclear how this happens. To address this issue at both behavioral and neural levels, we capitalized on sensory attenuation (SA) phenomenon (a self-generated stimulus is perceived as less intense than an identical externally generated stimulus). We compared the intensity of somatosensory stimuli produced by one's own intended movements and by movements of an embodied fake hand. Then, we investigated if in these two conditions SA was equally affected by interfering with the activity of the supplementary motor area (SMA; known to be related to motor intention and SA) using single-pulse transcranial magnetic stimulation. We showed that ownership of the fake hand triggered attenuation of somatosensory stimuli generated by its movements that were comparable to the attenuation of self-generated stimuli. Furthermore, disrupting the SMA eliminated the SA effect regardless of whether it was triggered by actual participant's movements or by illusory ownership. Our findings suggest that SA triggered by body ownership relies, at least in part, on the activation of the same brain structures as SA triggered by motor-related signals.
Identifiants
pubmed: 30649514
pii: 5289623
doi: 10.1093/scan/nsz002
pmc: PMC6374605
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
119-127Informations de copyright
© The Author(s) 2019. Published by Oxford University Press.
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