دانلود مقاله ISI انگلیسی شماره 72071
عنوان فارسی مقاله

تفاوتهای جنسی در رابطه ریزساختار ماده سفید IQ : مطالعه DTI

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
72071 2014 8 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Sex differences in the IQ-white matter microstructure relationship: A DTI study
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Brain and Cognition, Volume 91, November 2014, Pages 71–78

کلمات کلیدی
کورپوس؛ DTI؛ اطلاعات - ارتباط جنسی؛ TBSS
پیش نمایش مقاله
پیش نمایش مقاله تفاوتهای جنسی در رابطه ریزساختار ماده سفید IQ : مطالعه DTI

چکیده انگلیسی

Sex differences in the relationship between general intelligence and brain structure are a topic of increasing research interest. Early studies focused mainly on gray and white matter differences using voxel-based morphometry, while more recent studies investigated neural fiber tracts using diffusion tensor imaging (DTI) to analyze the white matter microstructure. In this study we used tract-based spatial statistics (TBSS) on DTI to test how intelligence is associated with brain diffusion indices and to see whether this relationship differs between men and women. 63 Men and women divided into groups of lower and higher intelligence were selected. Whole-brain DTI scans were analyzed using TBSS calculating maps of fractional anisotropy (FA), radial diffusivity (RD), and axial diffusivity (AD). The results reveal that the white matter microstructure differs between individuals as a function of intelligence and sex. In men, higher intelligence was related to higher FA and lower RD in the corpus callosum. In women, in contrast, intelligence was not related to the white matter microstructure. The higher values of FA and lower values of RD suggest that intelligence is associated with higher myelination and/or a higher number of axons particularly in men. This microstructural difference in the corpus callosum may increase cognitive functioning by reducing inter-hemispheric transfer time and thus account for more efficient brain functioning in men.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.