莱维体疾病中的句子理解:功能磁共振成像研究
Lubomira Novakova1, Martin Gajdoš1, Daniel Carbol1,2
1Applied Neuroscience Research Group, Central European Institute of Technology - CEITEC, Masaryk University, Brno 62500, Czech Republic.
Brain communications
|November 13, 2025
概括
患有轻度认知障碍和勒维体 (MCI-LB) 的患者表现出句子理解能力受损. 这与语言网络和皮层下皮层通路的连接性降低有关.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 神经学 神经学
背景情况:
- 勒维体疾病 (LBDs),如帕金森病和勒维体痴呆症,经常伴有轻度认知障碍 (MCI-LB).
- 语言功能障碍,特别是语法理解障碍,在MCI-LB患者中经常被忽视.
研究的目的:
- 调查MCI-LB患者的语法理解缺陷.
- 使用功能性MRI识别这些语言障碍的神经支柱.
主要方法:
- 25名MCI-LB患者和25名健康对照 (HC) 的队列在执行句子理解任务 (句子理解测试 - ToSC) 时接受了功能性MRI.
- 使用心理生理相互作用 (PPI) 分析了功能连接,重点关注条纹和语言网络相互作用.
主要成果:
- 与HC相比,MCI-LB患者的ToSC得分明显较低.
- 功能性连接性分析显示,MCI-LB患者的骨,前骨和左上边缘骨的条状连接性下降.
- 在处理复杂 (非正规) 句子时,观察到连接性减少,特别是在背部语言路径内.
结论:
- MCI-LB与语法理解障碍有关,与下皮层-皮层和背部语言网络连接性降低相关.
- 在MCI-LB中改变的前连接可能成为这些α-synucleinopathies中与语言相关的认知缺陷的潜在生物标志物.
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