年轻高山藏人脑结构的性别差异
Xinjuan Zhang1,2,3,4, Cunxiu Fan5,1, Yanqiu Liu6
1Institute of Brain Disease and Cognition, School of Medicine, Xiamen University, 4221 Xiang'an South Road, Xiamen 361102, China.
Cerebral cortex (New York, N.Y. : 1991)
|February 5, 2025
概括
与男性相比,西藏女性的大脑对高海拔地区有明显的适应性,灰质体积和皮质厚度的差异可能会影响认知功能. 这些发现突出了对高海拔环境的性别特异反应.
科学领域:
- 神经科学是一个神经科学.
- 人类的适应能力
- 高度生理学 高度生理学
背景情况:
- 高海拔环境带来了独特的生理挑战.
- 人类适应高度的性别差异已知,但西藏人的特定大脑模式需要进一步调查.
研究的目的:
- 研究生活在高海拔地区的藏族人口中大脑结构和认知表现的性别差异.
- 为了比较这些模式与低地汉族的中国控制.
主要方法:
- 对61名西藏男性和68名西藏女性以及汉族对照者的T1权重磁共振成像 (MRI) 扫描进行分析.
- 神经心理测试,包括数字序列积累和前置数字跨度.
主要成果:
- 与男性相比,西藏女性在特定的认知任务 (数字序列积累,前进数字跨度) 中表现更差.
- 男性 (藏族和汉族) 的全球灰白质量比女性更大.
- 与男性相比,西藏女性的灰色物质区域体积较小,但在特定的额头区域的皮质厚度较大,皮质厚度与海拔高度负相关.
结论:
- 西藏女性大脑似乎更容易受到高海拔影响,与男性相比,其结构和认知模式明显不同.
- 在大脑形态学中观察到的性别差异可能与高海拔居民的神经心理性能差异有关.
- 高海拔适应表现出性别特异的神经生物学变异.
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