Spinal cord injury affects the interplay between visual and sensorimotor representations of the body.

Détails

Ressource 1Télécharger: BIB_7B2D61B1AFC1.P001.pdf (805.46 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_7B2D61B1AFC1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Spinal cord injury affects the interplay between visual and sensorimotor representations of the body.
Périodique
Scientific reports
Auteur(s)
Ionta S., Villiger M., Jutzeler C.R., Freund P., Curt A., Gassert R.
ISSN
2045-2322 (Electronic)
ISSN-L
2045-2322
Statut éditorial
Publié
Date de publication
04/02/2016
Peer-reviewed
Oui
Volume
6
Pages
20144
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Publication types: Journal Article ; Research Support, Non-U.S. Gov't

Résumé
The brain integrates multiple sensory inputs, including somatosensory and visual inputs, to produce a representation of the body. Spinal cord injury (SCI) interrupts the communication between brain and body and the effects of this deafferentation on body representation are poorly understood. We investigated whether the relative weight of somatosensory and visual frames of reference for body representation is altered in individuals with incomplete or complete SCI (affecting lower limbs' somatosensation), with respect to controls. To study the influence of afferent somatosensory information on body representation, participants verbally judged the laterality of rotated images of feet, hands, and whole-bodies (mental rotation task) in two different postures (participants' body parts were hidden from view). We found that (i) complete SCI disrupts the influence of postural changes on the representation of the deafferented body parts (feet, but not hands) and (ii) regardless of posture, whole-body representation progressively deteriorates proportionally to SCI completeness. These results demonstrate that the cortical representation of the body is dynamic, responsive, and adaptable to contingent conditions, in that the role of somatosensation is altered and partially compensated with a change in the relative weight of somatosensory versus visual bodily representations.

Mots-clé
Adolescent, Adult, Body Image, Case-Control Studies, Child, Child, Preschool, Hand/physiology, Humans, Paraplegia/physiopathology, Quadriplegia/physiopathology, Somatosensory Cortex/physiology, Spinal Cord Injuries/physiopathology, Spinal Cord Injuries/rehabilitation, Visual Cortex/physiology, Young Adult
Pubmed
Open Access
Oui
Création de la notice
12/02/2016 16:23
Dernière modification de la notice
08/05/2019 20:48
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