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The antero-dorsal precuneal cortex supports ...
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Document type :
Article dans une revue scientifique: Article original
DOI :
10.1093/brain/awz179
PMID :
31237943
Permalink :
http://hdl.handle.net/20.500.12210/37654
Title :
The antero-dorsal precuneal cortex supports specific aspects of bodily awareness
Author(s) :
Herbet, Guillaume [Auteur]
Lemaitre, Anne-Laure [Auteur]
Moritz-Gasser, Sylvie [Auteur]
Cochereau, Jérôme [Auteur]
Duffau, Hugues [Auteur]
Journal title :
Brain - A Journal of Neurology
Abbreviated title :
Brain
Volume number :
142
Pages :
2207-2214
Publisher :
Oxford University Press (OUP)
Publication date :
2019-08-01
ISSN :
0006-8950
Keyword(s) :
Bodily awareness
Body schema
Glioma
Parietal cortex
Precuneus
HAL domain(s) :
Sciences cognitives
English abstract : [en]
The precuneus is a functionally heterogeneous area located on the medial face of the parietal cortex, wedged between the occipital cortex and the paracentral lobule. In view of its topological positioning, this associative ...
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The precuneus is a functionally heterogeneous area located on the medial face of the parietal cortex, wedged between the occipital cortex and the paracentral lobule. In view of its topological positioning, this associative cortex is well-placed to play an important role in multisensory integration, specific aspects of which participate to bodily awareness. However, this potential implication remains unestablished. We assessed bodily awareness longitudinally in 14 rare patients who underwent a surgery for a low-grade glioma mainly infiltrating the precuneus. To determine the brain locus the most frequently affected in patients showing bodily awareness disorders, we first contrasted the resection cavity distributions of patients with versus without bodily awareness disorders. We next applied 'lesion network mapping' to identify the networks functionally coupled with lesion locations causing bodily awareness disorder. Bodily awareness disorders were observed in half of patients after surgery, especially alien hand, macrosomatognosia and fading limb. Importantly, a dissociation was revealed between the antero-dorsal precuneus (bodily awareness disorders) and postero-dorsal precuneus (no bodily awareness disorders). Furthermore, bodily awareness disorder-related regions were specifically connected to a network of sensorimotor regions while others were connected with the default network. Altogether, the present findings indicate a critical role of the antero-dorsal precuneus in specific aspects of bodily awareness and in the maintenance of body schema.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
Collections :
  • Psychologie : Interactions, Temps, Émotions, Cognition (PSITEC) - ULR 4072
Submission date :
2021-03-26T12:22:01Z
Université de Lille

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