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在帕金森病中,通过下丘脑核深脑刺激 (STN-DBS) 调节非节律时间预测
Rebecca Burke1,2, Marleen J Schoenfeld1,2, Christian K E Moll1
1Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
概括
脑下核 (STN) 的深度大脑刺激 (DBS) 通过调节大脑振荡来改善帕金森病 (PD) 的时间预测. 虽然性能得到恢复,但潜在的神经机制只能部分恢复.
科学领域:
- 神经科学是一个神经科学.
- 运动障碍 运动障碍
- 计算精神病学是一种计算精神病学.
背景情况:
- 准确的时间预测对于运动控制至关重要,并依赖于皮质干细胞回路.
- 帕金森病 (PD) 损害了运动和非运动功能,包括时间预测.
- 脑下核深度大脑刺激 (STN-DBS) 可以缓解PD的运动症状,但其对时间预测的影响不太清楚.
研究的目的:
- 研究STN-DBS对PD患者时间预测性能的影响.
- 检查STN-DBS对潜在的大脑振荡动态的影响,特别是β频段功率和三角频段试验间阶段一致性 (ITPC).
主要方法:
- 13名患有STN-DBS的PD患者进行了带有和没有刺激的时间预测任务 (DBS ON/OFF).
- 在任务期间记录了64通道的脑电图 (EEG).
- 分析了行为和EEG数据 (β功率,delta ITPC) 并与20个健康对照进行了比较.
主要成果:
- 患有PD的患者表现出时间预测受损,STN-DBS改善了控制水平.
- 在PD患者中观察到降低β抑制 (DBS OFF),但在DBS ON时正常化.
- 与对照组相比,DBS ON和OFF都显示了较低的delta ITPC;delta ITPC与DBS ON的准确性呈正相关性.
结论:
- STN-DBS增强了PD的时间预测,可能是通过调节β和delta振荡活动.
- 虽然行为表现得到改善,但STN-DBS只能部分恢复时间预测的神经振荡机制.
- 需要进一步的研究才能充分理解STN-DBS和PD的时间预测缺陷之间的复杂相互作用.
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