上肢截肢者的替代肌肉协同模式
Xiaojun Wang1, Junlin Wang1,2, Ningbo Fei1
1Department of Orthopedics and Traumatology, LKS Faculty of Medicine, The University of Hong Kong, 999077 Hong Kong, China.
Cognitive neurodynamics
|June 3, 2024
概括
截肢者可以通过反训练来学习不同的肌肉激活模式来改善肌电假肢控制. 这种运动技能的学习显示出对假肢功能和精度的长期影响.
科学领域:
- 生物医学工程 生物医学工程
- 神经科学是一个神经科学.
- 康复科学 康复科学 康复科学
背景情况:
- 肌电假肢为截肢者提供功能恢复.
- 由于难以掌握或保持一致的表面肌电图 (sEMG) 模式识别,假肢控制仍然存在挑战.
- 运动学习在开发独特的肌肉激活模式以改善假肢控制中的作用需要进一步研究.
研究的目的:
- 调查运动技能学习对截肢者产生明显和一致的肌肉激活模式的能力的纵向影响.
- 评估针对性反培训对sEMG模式开发和假肢控制的影响.
- 评估长期保留运动学习对sEMG模式分类准确性的影响.
主要方法:
- 一个为期10周的运动技能学习计划,涉及两名截肢者,他们被训练使用实时sEMG视觉反来产生特定的肌肉激活.
- 与对照组相比,对sEMG模式变异性 (RMS变异性) 和区别性的分析.
- 利用CNN-LSTM分类器来评估随着时间的推移和6个月后续的学习sEMG模式的分类准确性.
主要成果:
- 参与者在10周的培训期间开发出独特和独特的sEMG激活模式.
- 对于特定的预期手动,观察到RMS变异的减少,这表明模式一致性增加.
- sEMG模式分类准确度显示出显著的上升趋势,在6个月后续观察到持久的改善.
结论:
- 截肢者可以通过有针对性的反训练有效地学习独特的肌肉激活模式,从而改善肌电假肢控制.
- 运动技能学习可以更新残余肢体的运动控制方案,提高触发预期假肢功能的能力.
- 观察到的持久效应表明,运动学习干预措施是改善肌电假肢长期性能的一个有希望的策略.
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