Artificial embodiment displaces cortical neuromagnetic somatosensory responses.
Humans
Somatosensory Cortex
/ physiology
Female
Male
Adult
Evoked Potentials, Somatosensory
/ physiology
Illusions
/ physiology
Neuronal Plasticity
/ physiology
Young Adult
Touch Perception
/ physiology
Electric Stimulation
Magnetoencephalography
Fingers
/ physiology
Artificial Limbs
Hand
/ physiology
Electrical stimulation
Embodiment
Magnetoencephalography
Primary somatosensory cortex
Rubber hand illusion
Somatosensory evoked fields
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
27 Sep 2024
27 Sep 2024
Historique:
received:
06
06
2024
accepted:
06
09
2024
medline:
28
9
2024
pubmed:
28
9
2024
entrez:
27
9
2024
Statut:
epublish
Résumé
Integrating artificial limbs as part of one's body involves complex neuroplastic changes resulting from various sensory inputs. While somatosensory feedback is crucial, plastic processes that enable embodiment remain unknown. We investigated this using somatosensory evoked fields (SEFs) in the primary somatosensory cortex (S1) following the Rubber Hand Illusion (RHI), known to quickly induce artificial limb embodiment. During electrical stimulation of the little finger and thumb, 19 adults underwent neuromagnetic recordings before and after the RHI. We found early SEF displacement, including an illusion-brain correlation between extent of embodiment and specific changes to the first cortical response at 20 ms in Area 3b, within S1. Furthermore, we observed a posteriorly directed displacement at 35 ms towards Area 1, known to be important for visual integration during touch perception. That this second displacement was unrelated to extent of embodiment implies a functional distinction between neuroplastic changes of these components and areas. The earlier shift in Area 3b may shape extent of limb ownership, while subsequent displacement into Area 1 may relate to early visual-tactile integration that initiates embodiment. Here we provide evidence for multiple neuroplastic processes in S1-lasting beyond the illusion-supporting integration of artificial limbs like prostheses within the body representation.
Identifiants
pubmed: 39333283
doi: 10.1038/s41598-024-72460-6
pii: 10.1038/s41598-024-72460-6
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
22279Subventions
Organisme : Ministero della Salute
ID : GR-2019-12368960
Organisme : European Research Council
ID : RESHAPE ERC-2015-STG
Pays : International
Organisme : Ministero dell'Università e della Ricerca
ID : Enable R16ZBLF9E3
Organisme : Istituto Nazionale per l'Assicurazione Contro Gli Infortuni sul Lavoro
ID : Spine 4.0 c85f21001020001
Informations de copyright
© 2024. The Author(s).
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