SEXUAL ORIENTATION AND THE SIZE OF THE ANTERIOR COMMISSURE IN THE HUMAN BRAIN
SEXUAL ORIENTATION AND THE SIZE OF THE ANTERIOR COMMISSURE IN THE HUMAN BRAIN
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DOI：
10.1073/pnas.89.15.7199
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发表时间：
1992-08-01
影响因子：
11.1
通讯作者：
GORSKI, RA
中科院分区：
文献类型：
--
作者：
ALLEN, LS;GORSKI, RA
前连合，一个纤维束，是在其中矢状面在女性比男性更大，在90个死后的同性恋男性，异性恋男性，和异性恋女性的大脑进行了检查。男同性恋者的前连合正中矢状面比女异性恋者大18%，比男异性恋者大34%。这种与性别和性取向相关的解剖学差异可能部分地构成了同性恋男性、异性恋男性和异性恋女性之间认知功能和大脑偏侧化差异的基础。此外，这一发现的差异，在结构上不知道是有关生殖功能支持的假设，在发展早期的因素区分性别双态结构和功能的大脑，包括前连合和性取向，在一个全球性的时尚。
The anterior commissure, a fiber tract that is larger in its midsagittal area in women than in men, was examined in 90 postmortem brains from homosexual men, heterosexual men, and heterosexual women. The midsagittal plane of the anterior commissure in homosexual men was 18% larger than in heterosexual women and 34% larger than in heterosexual men. This anatomical difference, which correlates with gender and sexual orientation, may, in part, underlie differences in cognitive function and cerebral lateralization among homosexual men, heterosexual men, and heterosexual women. Moreover, this finding of a difference in a structure not known to be related to reproductive functions supports the hypothesis that factors operating early in development differentiate sexually dimorphic structures and functions of the brain, including the anterior commissure and sexual orientation, in a global fashion.