کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4341821 1295847 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Minicolumnar structure in Heschl’s gyrus and planum temporale: Asymmetries in relation to sex and callosal fiber number
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Minicolumnar structure in Heschl’s gyrus and planum temporale: Asymmetries in relation to sex and callosal fiber number
چکیده انگلیسی

Aim: To investigate the cytoarchitectural basis of asymmetries in human auditory cortex. Minicolumn spacing and number, and regional cortical volume and surface area were measured in the primary auditory region (Heschl’s gyrus, HG) and posterior auditory association region (planum temporale, PT) in 17 neurologically normal adults (10 female, seven male). PT surface area, minicolumn spacing and minicolumn number were greater in the left hemisphere. HG surface area was larger in the left hemisphere. Asymmetries of minicolumn number in primary and association auditory regions correlated with axonal fiber numbers in the subregions of the corpus callosum through which they project. PT minicolumn number was more asymmetrical in men than women but total number was similar in the two sexes. We conclude that asymmetry of the surface area of the PT is a function of minicolumn spacing. Fewer callosal projections between the plana are found when the minicolumn spacing is more asymmetrical.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 143, Issue 4, 28 December 2006, Pages 1041–1050
نویسندگان
, , , ,