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一个节能的认知策略? "缓慢但稳定"注意力的神经生理学动态在高海拔的西藏人中

Xiao-Yan Huang¹, Nian-Nian Wang², Jing Zhou³

¹Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou 510631, China; School of Psychology, Center for Studies of Psychological Application, and Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou 510631, China.

Physiology & behavior

|December 13, 2025

概括

高海拔的西藏人表现出独特的认知适应,使用节能"缓慢但稳定"的注意力策略. 他们的大脑活动模式不同,吸引运动区域进行更好的高海拔认知处理.

科学领域:

神经科学是一个神经科学.
人类的适应能力
认知心理学认知心理学

背景情况:

藏族原住民具有已知的生理和神经解剖学适应高海拔地区.
在高海拔地区的人群中,认知处理的动态并未得到充分理解.

研究的目的:

在高海拔藏人中研究认知处理,特别是刺激驱动的注意力 (SDA) 和目标导向的注意力 (GDA).
为了比较高海拔藏人与海平面汉人参与者之间的注意力模式和神经动态.

主要方法:

使用视觉搜索范式与高时间分辨率电脑图 (EEG).
检查了与事件相关的潜在 (ERP) 组件,如晚期积极潜力 (LPP) 和晚期后期消极性 (LPN).
分析了测量频段 (4-10 Hz) 事件相关同步 (ERS) 和采用源定位技术.

主要成果:

西藏人表现出"缓慢但稳定"的注意力模式,准确度相似,但对汉人控制的反应时间 (RT) 较长.
在西藏人中观察到明显的神经动态,包括在SDA期间较小的LPP/LPN和较低的甲基频段ERS,以及在GDA期间较小的LPP.
来源本地化揭示了藏人中与运动相关的区域的更大参与,与汉人参与者的后部中线和控制区域形成鲜明对比.

结论:

西藏高海拔适应需要一个节能的认知策略.
这些发现突出了极端环境中的认知可塑性,并为高海拔人口的干预提供了电生理学的见解.

关键词:

电脑电图 (EEG) 是一种电脑电图.目标导向的注意力 (GDA)高海拔环境高海拔环境刺激驱动的注意力 (SDA)西藏人西藏人西藏人

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