针对性肌肉再内核化,用于实时控制多功能人工臂的肌电控制
Todd A Kuiken1, Guanglin Li, Blair A Lock
1Neural Engineering Center for Artificial Limbs, Rehabilitation Institute of Chicago, 345 E Superior St, Room 1309, Chicago, IL 60611, USA. tkuiken@northwestern.edu
JAMA
|February 13, 2009
概括
针对性肌肉再生 (TMR) 手术使截肢者能够使用电肌图 (EMG) 信号控制假肢. 这项研究表明TMR患者可以有效地实时操作先进的假肢.
科学领域:
- 生物医学工程 生物医学工程
- 康复医学 康复医学 康复医学
- 神经科学是一个神经科学.
背景情况:
- 截肢切断神经控制途径为假肢功能.
- 有针对性的肌肉再生 (TMR) 将残余神经重新引导到完整的肌肉.
- 重生肌肉产生表面电肌图 (EMG) 信号用于假肢控制.
研究的目的:
- 评估TMR手术在使上肢截肢者能够控制假肢手臂方面的疗效.
- 评估模式识别算法在解码EMG信号中对假肢手臂运动控制的性能.
主要方法:
- 该研究涉及5名接受TMR手术的患者和5名对照参与者.
- 记录和解码了表面EMG信号,使用模式识别算法来控制虚拟假肢.
- 通过运动选择时间,完成时间和成功率来衡量性能,TMR患者还操作了先进的假肢原型.
主要成果:
- TMR患者成功地执行了10种不同的假肢手臂运动 (肘部,手腕,手).
- 对TMR患者的平均运动选择和完成时间略长于对照组,但在功能限制内.
- TMR患者的成功率很高 (96.3%用于上肢,86.9%用于手部运动),三名患者表现出对先进假肢的控制.
结论:
- 重生肌肉提供足够的EMG数据来实时控制复杂的人工臂.
- TMR手术是一种可行的技术,可以恢复直观的假肢手臂控制.
- 模式识别算法有效地将EMG信号转化为假肢运动.
相关概念视频
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...
Muscle Stimulation Frequency
The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...


