Sex-linked differences in the anatomy of the perisylvian language cortex: a volumetric MRI study of gray matter volumes.
Perisylvian regions important for auditory processing include Heschl's gyrus (HG), the planum temporale (PT), the posterior superior temporal gyrus (pSTG), and the posterior ascending ramus (PAR). Sex-linked differences in language functions and anatomy have been suggested. To examine sex-linked differences, the authors used MRI to measure HG, PT, pSTG, and PAR volumes. Sex differences were found in right HG and right pSTG volumes but not in the left volumes of these structures. For the PT, there were sex differences in asymmetry; women exhibited leftward asymmetry of the PT, whereas men did not exhibit PT asymmetry. These findings suggest that there are sex-linked differences in the anatomy of primary and association auditory cortices.
Knaus
Tracey A
TA
Department of Psychiatry and Neurology and Neuroscience Training Program, Tulane University Health Sciences Center, New Orleans, LA 70112, USA.
Bollich
Angela M
AM
Corey
David M
DM
Lemen
Lisa C
LC
Foundas
Anne L
AL
D000328:Adult; D000704:Analysis of Variance; D016022:Case-Control Studies; D002540:Cerebral Cortex / Q000033:anatomy & histology* / Q000502:physiology; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D007802:Language; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D009445:Neuroanatomy / Q000379:methods; D009483:Neuropsychological Tests; D015203:Reproducibility of Results; D012727:Sex Characteristics