高海拔暴露导致大脑功能网络的模块化增加,注意力资源在视觉工作记忆的早期处理中被更多地占用
Jing Zhou1,2, Nian-Nian Wang1,2,3, Xiao-Yan Huang1,2
1Key Laboratory of Brain, Cognition and Education Sciences, Ministry of Education, South China Normal University, Guangzhou, China.
Cognitive neurodynamics
|November 18, 2024
概括
高空暴露会通过增强注意偏差和意识处理来改变视觉工作记忆. 这种认知转变与高海拔人口中大脑网络模块化程度的增加有关.
科学领域:
- 认知神经科学 认知神经科学
- 神经科学是一个神经科学.
- 人体生理学 人体生理学
背景情况:
- 工作记忆对于认知任务至关重要.
- 高海拔环境会影响认知功能,包括工作记忆.
- 了解这些影响对于人类适应研究至关重要.
研究的目的:
- 为了研究由于高海拔暴露而导致工作记忆变化的基础的神经机制.
- 在高海拔和海平面人口之间比较视觉工作记忆性能和大脑活动.
- 探索大脑功能网络拓与认知变化之间的关系.
主要方法:
- 使用了多层次的变更检测任务,具有5个内存负载级别.
- 收集了来自高海拔汉族居民和海平面比较小组的脑电图 (EEG) 数据.
- 雇员与事件相关的潜力 (ERP) 分析和与任务相关的功能连接网络分析.
主要成果:
- 高海拔组在记忆维护期间在大脑网络中表现出更高的正常化模块化.
- 在高海拔群体的部区域中,P1和N1峰值延迟较短,这表明早期视觉处理注意偏差有所增强.
- 在高海拔群体中,在高记忆负载下增加了N2振幅,这表明有更多的意识处理.
结论:
- 高海拔暴露会改变视觉工作记忆,通过在早期视觉阶段增强注意力偏差和意识处理.
- 增加的大脑功能网络模块化可能是这些认知适应高海拔的基础.
- 研究结果表明,大脑网络结构变化与环境压力下的认知表现之间存在联系.
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