睡眠不足期间的功能连接性改变:研究关键大脑区域和网络
Xiaolei Wang1, Ya Li1, Feihan Jiao1
1Department of Radiology, Xijing Hospital, Air Force Medical University, 710032 Xi'an, Shaanxi, China.
Journal of integrative neuroscience
|January 4, 2024
概括
缺乏睡眠会增加默认模式网络 (DMN) 和大脑垂体中的大脑活动,同时在前端对称网络 (FPN) 中降低大脑活动. 这些神经变化与增加的嗜睡相关.
科学领域:
- 神经科学是一个神经科学.
- 睡眠科学 睡眠科学
- 认知神经科学 认知神经科学
背景情况:
- 睡眠不足 (SD) 构成重大公共健康风险,影响认知和行为.
- 在SD期间,昼夜节律,睡眠压力和大脑活动之间的相互作用仍然未被充分探索.
- 功能磁共振成像 (fMRI) 和功能连接密度 (FCD) 提供了研究这些相互作用的新方法.
研究的目的:
- 为了研究睡眠压力和昼夜节律相互作用在睡眠剥夺期间的神经支柱.
- 为了检查功能性大脑活动如何随着睡眠增加而发生变化.
- 识别受睡眠剥夺影响的特定大脑区域和网络.
主要方法:
- 在睡眠剥夺试验期间,利用fMRI评估36名健康志愿者的大脑活动.
- 在多个时间点使用斯坦福睡眠度量 (SSS) 测量睡眠度.
- 分析了全球和本地功能连接密度 (gFCD和iFCD) 的关键区域,如质体,前端对面网络 (FPN) 和默认模式网络 (DMN).
主要成果:
- 在关键大脑区域观察到gFCD和iFCD的显著变化.
- 增加的嗜睡与改变的gFCD和iFCD值有很强的相关性,特别是在左上旋和左丘脑.
- 在这些区域发现了增加gFCD的趋势,并在右上额头回中减少iFCD.
结论:
- 睡眠剥夺可以增强默认模式网络 (DMN) 和丘脑的功能活动,同时减少前端对称网络 (FPN) 的活动.
- 这些观察到的脑活动变化与睡眠水平的增加有显著的关联.
- 这些发现突出了睡眠剥夺的神经机制,为潜在的临床干预提供了信息.
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