Genetic and Environmental Influences on the Visual Word Form and Fusiform Face Areas. - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Cerebral Cortex Année : 2015

Genetic and Environmental Influences on the Visual Word Form and Fusiform Face Areas.

Résumé

Two areas of the occipitotemporal cortex show a remarkable hemispheric lateralization: written words activate the visual word form area (VWFA) in the left fusiform gyrus and faces activate a symmetrical site in the right hemisphere, the fusiform face area (FFA). While the lateralization of the VWFA fits with the leftward asymmetry of the speech processing network, origin of the rightward asymmetry for faces is still unclear. Using fMRI data from 64 subjects (including 16 monozygotic (MZ) and 13 dizygotic (DZ) twin pairs), we investigated how activations evoked by written words, faces, and spoken language are co-lateralized in the temporal lobe, and whether this organization reflects genetic factors or individual reading expertise. We found that the lateralization of the left superior temporal activation for spoken language correlates with the lateralization of occipitotemporal activations for both written words and faces. Behavioral reading scores also modulate the responses to words and faces. Estimation of genetic and environmental contributions shows that activations of the VWFA, the occipital face area, and the temporal speech areas are partially under genetic control whereas activation of the FFA is primarily influenced by individual experience. Our results stress the importance of both genetic factors and acquired expertise in the occipitotemporal organization.
Fichier principal
Vignette du fichier
Pinel_Cereb_Cortex-2014.pdf (1.13 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Licence : Copyright (Tous droits réservés)

Dates et versions

pasteur-01579771 , version 1 (20-02-2024)

Licence

Copyright (Tous droits réservés)

Identifiants

Citer

Philippe Pinel, Christophe Lalanne, Thomas Bourgeron, Fabien Fauchereau, Cyril Poupon, et al.. Genetic and Environmental Influences on the Visual Word Form and Fusiform Face Areas.. Cerebral Cortex, 2015, 25 (9), pp.2478-93. ⟨10.1093/cercor/bhu048⟩. ⟨pasteur-01579771⟩
256 Consultations
8 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More