临床表现 临床表现
Angel Garcia De La Garza1, Carol A Derby1,2, Qi Gao1
1Albert Einstein College of Medicine, Bronx, NY, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
老年人的睡眠问题与认知能力下降有关. 这项研究发现,在具有不同认知轨迹的个体中,在五年内有明显的睡眠变化,这表明大脑的变化会影响睡眠.
科学领域:
- 老年学是一门学科.
- 睡眠医学 睡眠医学
- 认知神经科学 认知神经科学
背景情况:
- 睡眠障碍在老年人中普遍存在,并与认知障碍风险相关.
- 在这个人口群体中,关于睡眠变化和认知表现的纵向数据很少.
- 了解这些关系对于识别认知衰退的早期标志物至关重要.
研究的目的:
- 为了调查通过动图测量的纵向睡眠模式是否在老年人不同的认知轨迹之间存在差异.
- 检查全球认知变化与睡眠参数随时间变化之间的关联.
主要方法:
- 利用了来自爱因斯坦衰老研究的219名参与者的数据,随访时间中位数为4年.
- 每年使用动图来评估睡眠时间,睡眠开始后醒来 (WASO) 和睡眠效率.
- 潜在类混合效应模型根据电话蒙特利尔认知评估 (T-MoCA) 确定了认知轨迹 (一致高,中等,下降).
主要成果:
- 确定了三个认知轨迹组:持续高 (N=126),中等 (N=82),下降 (N=11).
- 在这些认知组的夜间睡眠时间,WASO和睡眠效率的纵向模式中观察到显著的差异 (p < 0.001).
- 与其他组相比,认知能力下降的组显示睡眠持续时间的急剧下降以及WASO和效率的更大改善.
结论:
- 在五年内,基于动图的睡眠变化在具有不同认知轨迹的老年人中是不同的.
- 在认知能力下降的群体中,更明显的睡眠变化可能表明影响睡眠的潜在神经退行过程.
- 需要对更大样本进行进一步的研究来证实这些发现及其影响.
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