高清透直流刺激的极性影响了运动序列的规划和执行
Jake J Son1, Tara D Erker2, Thomas W Ward3
1Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE, USA; College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA.
NeuroImage
|January 12, 2025
概括
高清度跨直流刺激 (HD-tDCS) 在运动控制任务期间影响大脑活动. 阳极刺激在简单的运动中增强了β振荡,这表明神经刺激的机制.
科学领域:
- 神经科学是一个神经科学.
- 运动控制研究 运动控制研究
- 大脑刺激 大脑刺激
背景情况:
- 非侵入性大脑刺激,特别是初级运动皮质的刺激,对神经疾病如中风的治疗有前途.
- 了解非侵入性脑刺激的精确神经机制对于优化其在运动系统疾病中的临床应用至关重要.
- 磁脑电图 (MEG) 为调查大脑活动提供了高时空分辨率.
研究的目的:
- 研究高清超直流刺激 (HD-tDCS) 对运动控制期间神经处理的光谱,空间和时间影响.
- 确定HD-tDCS如何影响大脑活动,以应对不同的运动任务复杂性.
- 阐明HD-tDCS调节与运动规划相关的神经振荡的机制.
主要方法:
- 利用磁脑电图 (MEG) 精确测量大脑活动.
- 采用高清超直流刺激 (HD-tDCS) 在阳极,阴极和假条件下.
- 参与者 (N=67) 在20分钟左主运动皮层刺激后,在MEG记录期间执行简单和复杂的运动测序任务.
主要成果:
- 在左主运动皮层,右皮层和右背侧前额皮层内的β振荡反应中发现了显著的刺激-按任务相互作用效应.
- 与模拟和阴极条件相比,阳极HD-tDCS在简单的运动序列中显著增强了β振荡反应.
- 对复杂的运动序列的神经反应没有受到HD-tDCS的极性影响.
结论:
- 与运动规划 (运动前) 相关的β振荡对非侵入性脑刺激的极性特别敏感.
- HD-tDCS 对运动任务中的神经活动的影响取决于运动序列的复杂性.
- 这些发现提供了关于用于运动康复的非侵入性大脑刺激的神经机制的见解.
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