NREM睡眠大脑网络调节睡眠剥夺后的认知恢复
Kangjoo Lee1,2, Yimeng Wang3,4,5,6, Nathan E Cross4,7,8
1Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut, USA, 06510.
bioRxiv : the preprint server for biology
|July 15, 2024
概括
非快速眼动 (NREM) 睡眠重组大脑网络,影响睡眠剥夺后的认知恢复. 在NREM睡眠期间增加网络隔离,特别是N3阶段,与较差的认知性能恢复相关.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 睡眠研究 睡眠研究
背景情况:
- 睡眠不足会损害认知功能,强调睡眠,特别是非快速眼动 (NREM) 睡眠在认知维护中的关键作用.
- 在NREM睡眠阶段N2和N3期间,特定的大脑网络重组模式及其与睡眠剥夺后个人认知恢复的联系仍然不清楚.
研究的目的:
- 研究睡眠剥夺后NREM睡眠阶段N2和N3期间大脑网络整合和分离如何变化.
- 确定这些网络变化是否可以预测午睡后认知表现恢复的个体差异.
- 引入和验证一个新的分析框架,分层分离指数 (HSI),用于量化网络分离.
主要方法:
- 利用休息状态功能磁共振成像 (fMRI) 来评估NREM睡眠 (N2和N3阶段) 和充分休息的清醒期间的大脑网络组织.
- 应用了一个新的分析框架,分层分离指数 (HSI),以量化跨多个空间尺度的网络分离,从全脑到voxel级.
- 与睡眠剥夺和恢复午睡条件之间的网络隔离模式相比,与基线清醒状态相比.
主要成果:
- 与清醒相比,NREM睡眠期间的网络分离在默认模式,背部注意力和体运动网络中增加.
- 在视觉,边缘和执行控制网络中,在N2和N3睡眠阶段之间观察到明显的声音水平分离模式.
- 在N3睡眠期间更大的网络隔离与工作记忆,执行注意力和精神运动警的恢复减少有关.
结论:
- NREM睡眠显著重组大脑网络,在不同阶段和大脑区域有不同的分离模式.
- 层次分离指数 (HSI) 有效地捕捉了网络组织的区域内变化,为认知补充提供了机制性的洞察力.
- 特定的NREM睡眠诱导网络隔离模式,特别是在N3期间,可以预测睡眠剥夺后认知恢复的程度.
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