神经病理学决定了大脑系统分离是否有利于认知表现
Annabell Coors1,2,3, Weiyi Zeng1, Ulrich Ettinger4
1Population Health Sciences, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.
Imaging neuroscience (Cambridge, Mass.)
|September 12, 2025
概括
随着年龄的增长,大脑系统的分离变得越来越少,特别是在老年女性中. 这种与年龄有关的大脑重组可能会补偿认知变化,并根据神经病理学影响表现.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 衰老研究研究 衰老研究
背景情况:
- 人类大脑的功能就像一个大型网络,有专门的系统.
- 与年龄相关的变化导致这些大脑系统的分离减少,但潜在的机制和影响仍然不清楚.
研究的目的:
- 为了研究大脑系统分离的年龄和性别特异性差异.
- 分析大脑系统分离与不同年龄组的认知表现之间的关系.
- 确定神经病理学是否影响大脑组织和认知之间的关联.
主要方法:
- 利用了来自莱兰研究的6455名参与者 (30-95岁) 的休息状态功能性MRI数据.
- 基于12个大脑系统内和之间功能连接的计算系统分离指数.
- 评估认知功能,包括记忆,处理速度,执行功能,结晶智能和眼运动任务.
主要成果:
- 证实,随着年龄的增长,大脑系统的分离变得越来越少 (全球分离:β = -0.298,p < 0.001).
- 观察到与男性相比,女性的隔离与年龄相关的减少更大.
- 发现较高的隔离有利于轻度神经病理学个体的记忆和处理速度,而较低的隔离有利于中年人的结晶智力.
结论:
- 与年龄有关的大脑重组,以减少系统分离为特征,在老年女性中更为明显.
- 大脑系统隔离对认知表现的影响随着年龄和神经病理的存在而变化.
- 大脑的重组可能起到补偿机制的作用,这可能解释了整个生命周期内结晶和流体认知能力的变化.
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