老年人与不同睡眠时间的老年人内在大脑活动的处理速度和重塑空间模式之间的关系
Frontiers in neuroscience
|June 12, 2023
概括
老年人睡眠时间短暂与大脑活动模式的改变有关,影响信息处理速度. 这项研究揭示了睡眠时间如何影响老年人的大脑可塑性和认知功能.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 认知科学 认知科学
背景情况:
- 大脑的神经可塑性及其与睡眠的关系对于认知功能至关重要.
- 信息处理速度随着年龄的增长而下降,而睡眠在这个过程中的作用在老年人中仍未得到充分探索.
研究的目的:
- 研究睡眠时间对老年人信息处理速度的影响.
- 探索与老年人睡眠和认知功能相关的大脑中潜在的中央可塑性机制.
主要方法:
- 一项涉及50名60岁以上的个体的病例控制研究,分为短 (<360分钟) 和非短睡眠持续时间组.
- 休息状态功能磁共振成像 (rs-fMRI) 用于分析大脑活动,计算低频波动 (ALFF) 的幅度,区域同质性 (ReHo) 和中心度 (DC).
- 统计分析,包括两个样本的t测试和一般线性模型,比较了各组之间的大脑活动和与认知功能相关的fMRI测量 (符号数字模式测试).
主要成果:
- 睡眠时间短的小组在双边中前额回形和右侧胰岛的ALFF显著增加.
- 增加的ReHo被观察到在左上顶回,而减少的ReHo被发现在右小脑.
- 睡眠时间短的小组也显示左下椎,左上椎,右小脑的DC下降;右岛ALFF与SDMT得分相关.
结论:
- 睡眠时间短暂与老年人内在大脑活动的空间模式变化有显著的关联.
- 这些大脑活动变化与信息处理速度的降低有关,突出显示了老年人睡眠影响的神经可塑性机制.
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