G
Guy Perchey
Researcher at Centre national de la recherche scientifique
Publications - 18
Citations - 1739
Guy Perchey is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Population & Planum temporale. The author has an hindex of 12, co-authored 18 publications receiving 1570 citations. Previous affiliations of Guy Perchey include Paris Descartes University & University of Paris.
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Journal ArticleDOI
In vivo mapping of gray matter loss with voxel-based morphometry in mild Alzheimer's disease.
Jean-Claude Baron,Jean-Claude Baron,Gaël Chételat,Béatrice Desgranges,Guy Perchey,Brigitte Landeau,V. de la Sayette,Francis Eustache +7 more
TL;DR: This study has mapped gray matter density by means of voxel-based morphometry on T1-weighted MRI volume sets in 19 patients with mild AD and 16 healthy subjects of similar age and gender ratio and report highly significant clusters of gray matter loss with almost symmetrical distribution.
Journal ArticleDOI
Gaussian mixture modeling of hemispheric lateralization for language in a large sample of healthy individuals balanced for handedness.
Bernard Mazoyer,Laure Zago,Gaël Jobard,Fabrice Crivello,Marc Joliot,Guy Perchey,Emmanuel Mellet,Laurent Petit,Nathalie Tzourio-Mazoyer +8 more
TL;DR: Results indicate that concordance of hemispheric dominance for hand and for language occurs barely above the chance level, except in a group of rare individuals (less than 1% in the general population) who exhibit strong right hemisphere dominance for both language and their preferred hand.
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Handedness and cerebral anatomical asymmetries in young adult males
Pierre-Yves Hervé,Fabrice Crivello,Guy Perchey,Bernard Mazoyer,Bernard Mazoyer,Nathalie Tzourio-Mazoyer +5 more
TL;DR: Comparisons of left- and right-handed subjects' asymmetry maps revealed significant effects of handedness on this pattern of anatomical asymmetry in frontal regions, which suggested that anatomical correlates of the left hemispheric specialization for language would exist in white matter.
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Cortical Terminations of the Inferior Fronto-Occipital and Uncinate Fasciculi: Anatomical Stem-Based Virtual Dissection.
Janice Hau,Silvio Sarubbo,Guy Perchey,Fabrice Crivello,Laure Zago,Emmanuel Mellet,Gaël Jobard,Marc Joliot,Bernard Mazoyer,Nathalie Tzourio-Mazoyer,Laurent Petit +10 more
TL;DR: The aim was to provide a detailed and quantitative description of their terminations in 60 healthy subjects and to apply an anatomical stem-based virtual dissection, mimicking classical post-mortem dissection to extract with minimal a priori the IFOF and UF from tractography datasets.
Journal ArticleDOI
BIL&GIN: A neuroimaging, cognitive, behavioral, and genetic database for the study of human brain lateralization.
Bernard Mazoyer,Emmanuel Mellet,Guy Perchey,Laure Zago,Fabrice Crivello,Gaël Jobard,Nicolas Delcroix,Mathieu Vigneau,Gaëlle Leroux,Laurent Petit,Marc Joliot,Nathalie Tzourio-Mazoyer +11 more
TL;DR: A database, named BIL&GIN, designed for investigating the cognitive, behavioral, genetic, and brain morphological/functional correlates of hemispheric specialization is reported on, containing records from a sample of 453 adult participants enriched in left-handers as compared to the general population.