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贝塔频段肌肉间连贯性的任务依赖性改变与ipsilateral皮质脊柱管刺激性有关
Na-Hyeon Ko1, Christopher M Laine2, Francisco J Valero-Cuevas3
1Department of Physical Therapy, California State University, Fresno, CA, United States.
Frontiers in sports and active living
|August 14, 2023
概括
活跃肌肉中的β频段同步可以评估皮质脊髓管的完整性. 单手动任务与相反的皮质脊髓管刺激性相反相关,为神经康复策略提供了洞察力.
科学领域:
- 神经科学是一个神经科学.
- 康复科学 康复科学 康复科学
- 发动机控制器的控制器
背景情况:
- 活动四肢肌肉电动肌图 (EMG) 信号中的β频段 (15-30 Hz) 同步作为皮质脊髓管完整性的非侵入性标记.
- 单手任务主要涉及一个皮质脊髓通道,但可以涉及双边电路,影响运动协调和反利用.
- 中枢神经系统 (CNS) 损伤后的神经回路利用障碍可能导致镜像运动和病理协同作用,突出需要了解四肢间的神经影响.
研究的目的:
- 调查非手动动作过程中β频段驱动到肌肉的任务依赖变化与对侧皮质脊柱管的刺激性之间的关系.
- 测试假设,在活动四肢的β频段电肌学-电肌学 (EMG-EMG) 连贯性的变化与未受影响的皮质脊髓管的刺激性变化相反相关.
主要方法:
- 十名参与者执行了旨在引起肌肉差异性β频段 (15-30 Hz) 驱动的弹的任务.
- 在任务执行过程中,跨体磁刺激 (TMS) 单脉冲应用于侧原发动皮质 (M1).
- 运动唤起的潜能 (MEP) 被记录在没有参与任务的手中,以评估皮质脊髓刺激性.
主要成果:
- 发现,未参与手部皮质脊髓刺激能力的任务诱导变化与执行任务手部β频段EMG-EMG连贯性变化具有反向相关性.
- 这表明肌肉间连贯性和对侧皮层脊柱管的刺激性之间存在一种新的联系.
结论:
- 这项研究确定了贝塔频段肌肉间连贯性和"不参与"的皮质脊髓管在非手动任务中的兴奋性之间的联系.
- 这些发现为进一步研究非人工任务困难背后的神经机制及其对恢复至关重要的神经通路的影响提供了基础.
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