The antero-dorsal precuneal cortex supports specific aspects of bodily awareness

Herbet, Guillaume; Lemaitre, Anne-Laure; Moritz-Gasser, Sylvie; Cochereau, Jérôme; Duffau, Hugues

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 ...
Show more >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

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