Takeuchi Hikaru, Taki Yasuyuki, Nouchi Rui, Hashizume Hiroshi, Sekiguchi Atsushi, Kotozaki Yuka, Nakagawa Seishu, Miyauchi Carlos Makoto, Sassa Yuko, Kawashima Ryuta
Division of Developmental Cognitive Neuroscience, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.
Hum Brain Mapp. 2015 Feb;36(2):440-8. doi: 10.1002/hbm.22638. Epub 2014 Sep 17.
Sexual behavior is a critical function of human procreation. Despite previous studies that investigated the neural mechanisms of basic human physiological sexual functions, the neural mechanisms that underlie individual differences in human sexual permissiveness remain unknown. We used voxel-based morphometry and a questionnaire (scale for sexual attitudes) to measure sexual permissiveness to investigate the gray matter and white matter structural correlates of sexual permissiveness. Sexual permissiveness was negatively correlated with regional gray matter density of the structures involving the right amygdala and surrounding areas, and positively correlated with regional white matter density of the white matter area that spread around the left amygdala to the hypothalamus area. There were no gender-specific relationships in the neural correlates of our findings. These findings suggest that structural variations in regions that play key roles in the basic physiological aspects of human sexuality underlie individual complex sexual attitudes in social life.
性行为是人类繁衍的一项关键功能。尽管先前有研究探讨了人类基本生理性功能的神经机制，但人类性宽容度个体差异背后的神经机制仍不清楚。我们使用基于体素的形态测量法和一份问卷（性态度量表）来测量性宽容度，以研究性宽容度的灰质和白质结构相关性。性宽容度与涉及右侧杏仁核及周边区域结构的局部灰质密度呈负相关，与从左侧杏仁核延伸至下丘脑区域的白质区域的局部白质密度呈正相关。我们的研究结果在神经相关性方面不存在性别特异性关系。这些发现表明，在人类性行为基本生理方面起关键作用的区域的结构变异是社会生活中个体复杂性态度的基础。
