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1
Heschl's gyrification pattern is related to speech-listening hemispheric lateralization: FMRI investigation in 281 healthy volunteers.
In: ISSN: 1863-2653 ; EISSN: 1863-2661 ; Brain Structure and Function ; https://hal.archives-ouvertes.fr/hal-01172587 ; Brain Structure and Function, Springer Verlag, 2015, 220 (3), pp.1585-99 (2015)
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Effect of Familial Sinistrality on Planum Temporale Surface and Brain Tissue Asymmetries
In: ISSN: 1047-3211 ; EISSN: 1460-2199 ; Cerebral Cortex ; https://hal-normandie-univ.archives-ouvertes.fr/hal-02951471 ; Cerebral Cortex, Oxford University Press (OUP), 2010, 20 (6), pp.1476-1485. ⟨10.1093/cercor/bhp209⟩ (2010)
Abstract: International audience ; The impact of having left-handers (LHs) among one's close relatives, called familial sinistrality (FS), on neuroanatomical markers of left-hemisphere language specialization was studied in 274 normal adults, including 199 men and 75 women, among whom 77 men and 27 women were positive for FS. Measurements of the surface of a phonological cortical area, the ''planum temporale'' (PT), and gray and white matter hemispheric volumes and asymmetries were made using brain magnetic resonance images. The size of the left PT of subjects with left-handed close relatives (FS1) was reduced by 10%, decreasing with the number of left-handed relatives, and lowest when the subject's mother was left-handed. Such findings had no counterparts in the right hemisphere, and the subject's handedness and sex were found to have no significant effect or interaction with FS on the left PT size. The FS1 subjects also exhibited increased gray matter volume, reduced hemispheric gray matter leftward asymmetry, and, in LHs, reduced strength of hand preference. These results add to the increasing body of evidence suggesting multiple and somewhat independent mechanisms for the inheritance of hand and language lateralization.
Keyword: [SCCO.NEUR]Cognitive science/Neuroscience; [SCCO.PSYC]Cognitive science/Psychology; familial sinistrality; handedness; hemispheric specialization; language; planum temporale
URL: https://doi.org/10.1093/cercor/bhp209
https://hal-normandie-univ.archives-ouvertes.fr/hal-02951471
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Effect of Familial Sinistrality on Planum Temporale Surface and Brain Tissue Asymmetries
Tzourio-Mazoyer, Nathalie; Simon, Gregory; Crivello, Fabrice. - : Oxford University Press, 2010
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Effect of Familial Sinistrality on Planum Temporale Surface and Brain Tissue Asymmetries
Tzourio-Mazoyer, Nathalie; Simon, Gregory; Crivello, Fabrice. - : Oxford University Press, 2009
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