在老年成人中对功能性大脑网络的个性化映射
bioRxiv : the preprint server for biology
|February 12, 2026
概括
个性化大脑网络映射揭示了老年人与年龄相关的独特变化. 与传统的小组方法相比,这种方法提供了对神经认知衰老和大脑变异性的更精确的理解.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 老年学是指老年学的学科.
背景情况:
- 老化的大脑在功能网络架构中表现出显著的变化,无论是系统的还是特异的.
- 目前的网络映射通常集中在年轻成年人身上,可能缺少特定年龄的神经可变性.
研究的目的:
- 评估个人特异性功能网络映射在年轻人和老年人中的有效性和影响.
- 将个性化映射与传统的群体平均方法进行比较,以描述神经认知衰老.
主要方法:
- 使用了两个功能磁共振成像 (fMRI) 数据集 (n=112年轻人,n=176年长的成年人).
- 将个性化的网络映射技术应用于静止状态fMRI数据.
- 评估了网络的一致性,对任务fMRI的忠实性,可靠性和可辨别性.
主要成果:
- 较年长的成年人比年轻的成年人表现出更独特的功能网络拓.
- 个性化地图增强了网络同质性和对任务激活的忠实性.
- 个体化绘制显示了2年可靠性和个人之间的可区分性.
结论:
- 个性化网络映射捕获了老年成人中显著的异质性.
- 这种方法可能比群体平均方法更准确地描述神经认知衰老.
- 个性化映射改善了对与年龄相关的神经和行为变异性的理解.
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