Neural basis of embodiment: distinct contributions of temporoparietal junction and extrastriate body area

Détails

ID Serval
serval:BIB_6933AA237E44
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Neural basis of embodiment: distinct contributions of temporoparietal junction and extrastriate body area
Périodique
Journal of Neuroscience
Auteur(s)
Arzy S., Thut G., Mohr C., Michel C. M., Blanke O.
Statut éditorial
Publié
Date de publication
2006
Peer-reviewed
Oui
Volume
26
Numéro
31
Pages
8074-8081
Langue
anglais
Notes
1529-2401 (Electronic)
0270-6474 (Linking)
Controlled Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't
Résumé
Embodiment, the sense of being localized within one's physical body, is a fundamental aspect of the self. Recently, researchers have started to show that self and body processing require distinct brain mechanisms, suggesting two posterior brain regions as key loci: the temporoparietal junction (TPJ), which is involved in self processing and multisensory integration of body-related information; and the extrastriate body area (EBA), which responds selectively to human bodies and body parts. Here we used evoked potential mapping and a distributed linear inverse solution to show that activations in EBA and TPJ code differentially for embodiment and self location, because the location and timing of brain activation depended on whether mental imagery is performed with mentally embodied (EBA) or disembodied (TPJ) self location. In a second experiment, we showed that only EBA activation, related to embodied self location, but not TPJ activation, related to disembodied self location, was modified by the subjects' body position during task performance (supine or sitting). This suggests that embodied self location and actual body location share neural mechanisms. Collectively, these data show that distributed brain activity at the EBA and TPJ as well as their timing are crucial for the coding of the self as embodied and as spatially situated within the human body.
Mots-clé
Adult *Body Image Brain Mapping Evoked Potentials/*physiology Humans Illusions/physiology Imagination/*physiology Male Parietal Lobe *Self Concept Temporal Lobe/*physiology Visual Cortex/*physiology
Création de la notice
17/01/2011 20:07
Dernière modification de la notice
20/08/2019 15:24
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