将线上连续运动解码与不受约束和受约束的关节进行比较,基于通用的肌肉骨模型.
Lizhi Pan1, Zhongyi Ding1, Haifeng Zhao2,3
1The Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, School of Mechanical Engineering, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin, 300350, China.
Medical & biological engineering & computing
|October 14, 2024
概括
缺少关节运动显著损害了人机界面 (HMI) 在连续运动解码中用于康复的性能. 限制手腕和手指后关节 (MCP) 关节导致更糟糕的任务完成时间和路径效率.
科学领域:
- 生物医学工程 生物医学工程
- 康复技术 康复技术 康复技术
- 人与计算机的交互
背景情况:
- 人机界面 (HMI) 在康复中至关重要,但截肢者在持续运动解码中表现较差.
- 缺失关节运动对截肢者的HMI表现的影响仍然不清楚.
研究的目的:
- 为了研究手腕和手指甲关节 (MCP) 关节运动的缺失如何影响HMI在连续运动解码中的性能.
- 使用肌肉骨模型,与受约束和不受约束的关节进行任务性能比较.
主要方法:
- 一种通用的肌肉骨模型 (MM) 用于从电肌图 (EMG) 信号中解码连续的手腕和MCP关节运动.
- 十名身体健康的受试者在线执行任务,他们的手腕和MCP关节要么不受约束,要么受到约束.
- 测量任务完成时间,超速和路径效率以量化性能.
主要成果:
- 与受约束的关节相比,未受约束的关节 (7.7s完成,0.59 overshoots,0.38路径效率) 的受试者表现明显更好 (17.86s完成,1.47 overshoots,0.22路径效率).
- 分析了与运动行为相关的肌肉激活模式.
- 约束关节导致所有测量指数的表现较差.
结论:
- 关节运动的缺失是导致连续运动解码与HMI的性能下降的一个重要因素.
- 了解这些关节特异性性能差异对于改善截肢者康复中的HMI设计至关重要.
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