在线预测来自单个运动单元活动的持续肌肉力量,使用自适应表面EMG分解
Haowen Zhao1, Yong Sun2, Chengzhuang Wei2
1School of Microelectronics, University of Science and Technology of China, Hefei, Anhui, 230027, China.
Journal of neuroengineering and rehabilitation
|April 4, 2024
概括
这项研究提出了一种新的在线方法,可以实时预测表面电肌图 (SEMG) 信号的肌肉力量. 该技术准确地解码了运动单元 (MU) 活动,改善了运动控制的神经接口能力.
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.
- 康复技术 康复技术 康复技术
背景情况:
- 从动力单元 (MU) 活动解码神经驱动器对于神经接口至关重要.
- 在持续收缩期间,从表面电肌图 (SEMG) 中准确分解MU活动仍然具有挑战性.
研究的目的:
- 开发和验证在线肌肉力量预测方法,使用从SEMG信号分解的MU活动.
- 为了增强运动控制和健康应用的实时神经接口功能.
主要方法:
- 实时MU活动分解技术应用于SEMG信号.
- 一个神经网络被训练来预测来自个体MU抽力的肌肉力量.
- 一个双线程并行算法在线更新了分解参数,以提高准确性.
主要成果:
- 提出的方法在力预测准确度方面取得了显著的改进.
- 根平均平方偏差 (RMSD) 减少到大约10%,健身 (R2) 达到0.90.
- 性能超过了两种传统方法,证明了在线更新策略的有效性.
结论:
- 开发的在线肌肉力量预测方法为实时肌电应用提供了一个有前途的技术.
- 这种方法提高了神经驱动信息提取的精度,以改善运动控制.
- 这项研究有助于推进神经接口,用于运动控制和健康监测.
相关概念视频
Motor Units
The motor unit is a fundamental component of the neuromuscular system and plays a crucial role in coordinating muscle contractions. It consists of a somatic motor neuron, which connects and controls multiple skeletal muscle fibers, forming a single functional segment. The axon of the motor neuron branches out and establishes synaptic connections known as neuromuscular junctions with individual muscle fibers within the motor unit.
Motor units come in different sizes, with smaller units...
Motor units come in different sizes, with smaller units...
Motor Unit Stimulation
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...


