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在人类上肢肌肉激活和肌肉间协调的电触调节

Hy Doan¹, Shahabedin Tavasoli¹, Gang Seo²

¹Department of Biomedical Engineering, University of Houston, 3517 Cullen Blvd, SERC Room 2011, Houston, TX, 77204-5060, USA.

Scientific reports

|January 20, 2025

概括

电触刺激 (ETS) 在力量控制过程中改变了肌肉活动和协调. 这种感官增强影响大脑如何控制手臂运动,为康复提供了洞察力.

科学领域:

神经科学是一个神经科学.
生物力学生物力学
康复工程康复工程康复工程

背景情况:

电触觉刺激 (ETS) 在有感觉缺陷的个体中显示了感觉增强的潜力.
对于ETS对神经肌肉协调策略的影响尚不清楚.
了解这些影响对于开发有效的感官替代器件至关重要.

研究的目的:

研究ETS如何在有或没有机械触觉变化的情况下调节力量控制期间的肌肉活动 (EMG) 和肌肉间协调.
评估ETS位置对神经肌肉反应的影响.
探索电触和机触感官输入之间的相互作用.

主要方法:

记录了15名健康参与者的11个手臂肌肉的EMG在3D力量控制任务中.
应用ETS到指或中指的尖端.
分析肌肉协同作用,以评估肌肉间协调.
模拟EMG作为肌肉协同作用和激活配置文件的线性组合.

主要成果:

根据刺激位置,ETS改变了个体肌肉激活.
肌肉协同成分保持不变,但它们的激活系数被ETS调节.
机械触觉输入减少了ETS对肌肉激活和协同效应的影响.

结论:

通过调节协同激活,而不是组合,ETS影响神经肌肉控制策略.
通过ETS感觉增强会影响人类上肢肌肉间协调.
结合机械触摸和电触摸输入可以减弱ETS诱导的调制.

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