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Updated: Jul 28, 2026

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在患有白质超强度的患者中,改变了动态功能网络连接和拓组织变异

Chaojuan Huang¹, Xia Zhou¹, Mengmeng Ren¹

¹Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.

Journal of neuroscience research

|July 20, 2023

概括

这项研究揭示了白质超强度 (WMH) 破坏动态大脑网络连接和组织,影响认知功能. 这些变化随着WMH严重程度的增加而变得更加明显.

科学领域:

神经成像是一种神经成像.
大脑小血管疾病 (CSVD) 的研究.
认知神经科学认知神经科学

背景情况:

白质高强度 (WMHs) 是大脑小血管疾病 (CSVD) 的关键标志物.
以前的研究表明,CSVD中的功能性大脑网络异常,通常使用静态连接.
有限的研究探讨了与WMH严重程度相关的动态网络变化.

研究的目的:

研究WMHs患者中被破坏的动态功能网络连接 (dFNC) 的情况.
分析与WMH严重程度相关的拓组织方差.
了解网络变化与CSVD认知缺陷之间的联系.

主要方法:

使用休息状态功能磁共振成像 (fMRI) 来自38个中度WMH,47个严重WMH和68个健康对照 (HC).
应用了独立组件分析 (ICA) 和移动窗口k-means集群来估计dFNC.
评估拓组织变异,包括本地和全球效率.

主要成果:

与HC相比,WMH患者表现出较高的稀疏连接dFNC状态1和较低的状态3的发生/持续时间.
患有WMH的患者表现出局部效率的变异增加,而不是全球效率.
严重的WMH病例显示出比中度WMH病例更明显的网络改变.

结论:

异常的dFNC状态和拓组织变异在中度至严重的WMH中得到证实.
改变的大脑网络特征表明功能分离和整合的不平衡.
这些发现与认知障碍相关,并可能为CSVD病原体提供见解.

关键词:

认知认知认知动态功能网络连接能力动态功能网络连接拓组织组织的拓组织组织.白质的超强度是白质的超强度.

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