异常的功能连接密度涉及结的步态及其用于帕金森病亚型的应用
Chaoyang Jin1, Shouliang Qi2,3, Lei Yang1
1College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China.
Brain imaging and behavior
|May 27, 2023
概括
帕金森病患者的步态结显示出大脑连接的改变. 特定大脑区域的功能连接密度 (FCD) 差异与步行严重程度的结相关.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 神经学 神经学
背景情况:
- 帕金森病 (PD) 的病理生理学,特别是步态结 (FOG),尚未完全理解.
- 功能连接密度 (FCD) 提供了一种分析大脑连接模式的方法.
- 休息状态功能磁共振成像 (rs-fMRI) 是研究大脑功能的一个关键技术.
研究的目的:
- 通过使用FCD来研究帕金森病中FOG的病理生理机制.
- 为了确定PD患者与没有FOG和健康对照之间的大脑连接的差异.
- 探索FCD变化与FOG严重程度之间的关系.
主要方法:
- 招募了23名PD患者具有FOG (PD FOG+),26名PD患者没有FOG (PD FOG-),22名健康对照 (HC).
- 收集了rs-fMRI数据并执行了FCD映射来比较组.
- 使用了FCD-FOG严重性关系的Pearson相关性和支持向量机 (SVM) 来进行分类.
主要成果:
- 在PD FOG+患者中,短距离FCD (前,环状,状回转) 增加,长距离FCD (前,状,环状回转) 减少.
- 在部区域的短距离FCD与FOG问卷 (FOGQ) 得分有积极的相关性;在中前额回形的长距离FCD与负相关性.
- SVM分类实现了高准确度:0.895 (PD FOG+与HC),0.966 (PD FOG-与HC) 和0.897 (PD FOG+与PD FOG-). 这两种分类都具有很高的准确度.
结论:
- 患有FOG的PD患者在运动控制,认知和感官处理至关重要的大脑区域中显示出改变的短程和长程FCD.
- FCD模式可以区分有FOG和没有FOG的PD患者,这表明它有可能作为生物标志物.
- 这些发现提高了对帕金森病的FOG病理生理学的理解.
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