在急性睡眠剥夺后,功能性大脑网络的动态重新配置:对空间工作记忆障碍的影响
Lili Xu1, Haoyuan Zhang2, Jinhan Zhang1
1Department of Magnetic Resonance, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China.
Sleep medicine
|July 20, 2025
概括
急性睡眠不足 (ASD) 会改变大脑网络动态和时间灵活性,影响空间工作记忆 (SWM). 这些变化表明,在睡眠丧失后,大脑进行补偿性重组.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 系统生物学 系统生物学
背景情况:
- 急性睡眠不足 (ASD) 会损害认知功能,特别是空间工作记忆 (SWM).
- 导致自闭症认知缺陷的动态神经机制尚未完全理解.
- 之前关于ASD动态功能网络连接 (dFNC) 的研究由于方法差异而缺乏可比性.
研究的目的:
- 调查dFNC的时间和拓动态中的ASD诱导的变化.
- 探索这些动态大脑变化与SWM性能之间的关联.
- 为了阐明睡眠不足后的SWM缺陷的神经基础.
主要方法:
- 50名健康的男性接受了fMRI和ASD前后的认知测试.
- 使用滑动窗 dFNC 方法来识别连接状态和时间特征.
- 图形理论指标量化了动态拓变化,并分析了与SWM性能的相关性.
主要成果:
- 确定了三个不同的dFNC状态,在ASD后的高度集成状态中增加了居住.
- ASD显著改变了全球和节点网络拓的时间变化 (CV).
- 突出网络中节点聚类系数的变化与SWM任务中错误报警的增加相关.
结论:
- 自闭症导致异常的大脑网络状态过渡和时间灵活性降低.
- 这些动态变化可能反映了睡眠剥夺后大脑网络的补偿性重组.
- 这项研究为ASD相关的SWM损伤提供了新的动态神经洞察力.
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