Detail Effects of handedness and sex on the morphology of the corpus callosum: A study with brain magnectic resonance imaging   Oleh:  Khalil, R. ; Regis, J. ; Habib, M. ; Oliva, A. ; Salamon, G. ; Gayraud, D. Jenis: Article from Bulletin/Magazine Dalam koleksi: Brain and Cognition vol. 16 no. 1 (May 1991), page 41-61. Ketersediaan Perpustakaan PKBB Nomor Panggil: 405/BAC/16 Non-tandon: tidak ada Tandon: 1  Lihat Detail Induk Isi artikel In view of conflicting data in the existing literature, we examined 53 normal subjects using a handedness questionnaire and callosal area measurements obtained from midsagittal MRI images. The callosum was found to be significantly larger in non consistent right-handers (NCRH), especially in its anterior half and especially for males. A significant hand x sex interaction, favoring consistent right-handed (CRH) females, was also found for the posterior midbody, a region known to house interhemispheric fibers connecting the right and left posterior association cortices. These results (1) confirm Witelson's (1985) first findings on postmortem specimens; (2) validate a dichotomy between CRH and NCRH rather than simply considering the writing hand, as was the case in most other similar studies; and (3) suggest that at least two different sex-related-probably hormonal-factors may be acting during the callosal development, one explaining the larger anterior half in NCRH males and the other the larger posterior midbody m CRH females. @ 1991 Academic Press. Inc. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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