在脑动脉静脉形患者的休息状态下语言功能连接的改变
Xiaofeng Deng1,2, Qiji Shi3, Zekun Han1
1Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
CNS neuroscience & therapeutics
|September 6, 2025
概括
大脑动脉静脉形 (AVM) 可以通过重组大脑连接来保持语言功能. 这项研究揭示了AVM患者功能连接的改变,突出了完整语言处理的补偿机制.
科学领域:
- 神经科学
- 神经学
- 放射学
背景情况:
- 尽管影响主要的语言区域,但未破裂的大脑动脉静脉形 (AVM) 很少导致失语.
- 了解AVM患者语言功能的补偿机制至关重要.
研究的目的:
- 研究左半球语言区域未破裂的大脑动脉静脉形 (AVM) 患者的语言重组机制.
- 使用功能连接 (FC) 和轨道加权静态功能连接 (TW-sFC) 分析功能连接的变化.
主要方法:
- 包括34名AVM患者和27名健康对照者的横截研究.
- 进行了休息状态功能磁共振成像 (rs-fMRI) 和扩散张力成像 (DTI).
- 使用传统的FC和TW-sFC分析来评估灰质和白质的连接性.
主要成果:
- 在AVM患者中,左半球和右半球语言区域之间的FC降低.
- 在前带皮层 (ACC) 和小脑语言区域之间观察到增加的FC.
- TW-sFC显示右半球纤维束的连接性有所增加,
结论:
- 在AVM患者中,完整的语言功能可能归因于大脑间,大脑-小脑和大脑内连接的重组.
- 重组涉及降低半球间抑制,通过ACC进行小脑补偿,并增强周围功能.
- 这些发现阐明了大脑在维持关键功能上的非凡可塑性,
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