下肢运动阻断前的皮层调制与帕金森病中步态结有关:一项EEG源定位研究
Julianne Baarbé1, Matt J N Brown2, Utpal Saha3
1Department of Medicine, University of Toronto and Division of Brain, Imaging & Behaviour, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada; Faculty of Health, York University, Toronto, Ontario, Canada.
Neurobiology of disease
|June 9, 2024
概括
帕金森病患者的步态结显示,在运动阻塞之前,特定的大脑区域的α节律增加. 多巴胺药物改善了步态和改变了大脑连接,这表明结可能是无意停止.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 运动障碍 运动障碍
背景情况:
- 步态结 (FOG) 是帕金森病 (PD) 的残疾症状之一.
- 识别FOG之前的皮质变化是一个关键的研究目标.
研究的目的:
- 为了研究皮质活动和功能连接的差异,在PD患者和没有FOG.
- 了解FOG的神经支柱及其与运动块的关系.
主要方法:
- 19名PD患者 (14名有FOG,5名没有) 在虚拟步进任务中接受了EEG记录.
- 在下肢运动阻塞 (LLMB) 和线索停止之前,分析了皮层活动和功能连接.
- 在"关闭"和"启动"多巴胺药物状态中收集数据.
主要成果:
- 在LLMB之前,PD-FOG患者观察到阿尔法节律 (8-12 Hz) 的增加,与PD患者没有FOG不同.
- 阿尔法节奏幅度与LLMB严重程度相关,特别是在"关闭"药物状态下.
- 在LLMB和停止之前,右下额头和补充运动区域之间的连接发生了改变.
结论:
- 在PD-FOG中,右下侧侧额头结构至关重要.
- 在运动阻塞之前,阿尔法节律活动的增加表明在FOG中发挥了作用.
- 研究结果表明,FOG可能代表'意外停止',为神经康复策略提供信息.
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