在人类成年人一生中绘制海马-小脑功能连接的地图
Kavishini Apasamy1, Samuel C Berry1, Marie-Lucie Read2
1Department of Psychology, Royal Holloway, University of London, Surrey, UK.
Communications biology
|November 20, 2025
概括
人类的海马和小脑在功能上是连接的,特别是在空间记忆中. 老龄化减少了这种大脑连接,影响了记忆系统.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 人类大脑成像 人类大脑成像
背景情况:
- 海马和小脑传统上被视为支持不同的记忆系统.
- 来自非人类物种的证据表明,海马和小脑在空间记忆行为中存在密切关系.
- 这些区域在人类中的功能组织和相互作用在很大程度上仍未被探索.
研究的目的:
- 用休息状态fMRI研究人类海马体和小脑之间的功能连接.
- 绘制海马-小脑功能网络的地形组织.
- 为了检查衰老对海马-小脑功能连接的影响.
主要方法:
- 基于种子的功能连接性分析应用于静止状态fMRI数据.
- 从479名年龄在18-88岁之间的认知正常参与者获得了数据.
- 在统计学上分析了海马和小脑区域之间的连接模式.
主要成果:
- 在海马和广泛的小脑皮层区域之间发现了显著的功能相关性,包括叶片HIV,HV,HVI,HVIIA (Crus I和II),HIX和HX.
- 观察到特定的连接模式:前海马与右侧Crus II的连接性更强,而后海马与叶V的连接性更强.
- 与年龄相关的功能连接的减少在海马和小脑叶片 (HVI和HV) 之间被确定.
结论:
- 这些发现揭示了人类海马-小脑功能组织的详细地形.
- 这项研究强调了衰老对这一关键大脑系统内的功能连接的影响.
- 结果为人类一生中记忆和空间导航的神经基础提供了新的见解.
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