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相关概念视频

Motor Unit Stimulation01:20

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...

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相关实验视频

Updated: Jun 23, 2026

Engineering Platform and Experimental Protocol for Design and Evaluation of a Neurally-controlled Powered Transfemoral Prosthesis
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适应性功能电刺激提供基于实时步态生物力学的刺激幅度.

Margo C Donlin1,2, Jill S Higginson3

  • 1Department of Biomedical Engineering, University of Delaware, 540 S. College Ave, Suite 201, Newark, DE 19713.

Journal of medical devices
|May 24, 2024
PubMed
概括

一个新的自适应功能电刺激 (AFES) 系统通过实时调整肌肉刺激来改善中风幸存者的步行康复. 这项技术增强了步行过程中的脚下降和推进辅助.

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Use of a Foot-Induced Digitally Controlled Resistance Device for Functional Magnetic Resonance Imaging Evaluation in Patients with Foot Paresis
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科学领域:

  • 神经科学是一个神经科学.
  • 生物医学工程 生物医学工程
  • 康复科学 康复科学 康复科学

背景情况:

  • 功能电刺激 (FES) 通过解决脚落和改善推进能力,有助于中风后的步行康复.
  • 目前的FES限制包括一些中风幸存者的步行功能不一致的临床改善.

研究的目的:

  • 开发和验证一种新的适应性FES (AFES) 系统用于中风步行康复.
  • AFES旨在根据实时步态生物力学优化刺激时间和振幅.

主要方法:

  • 开发了一个可适应的FES系统,使用双边脚开关来调节刺激时间.
  • 刺激幅度是动态调整基于背部屈曲角度和推进力测量.
  • 十个患有慢性中风后半的人参加了使用AFES系统的跑步机行走试验.

主要成果:

  • 在95%的步伐中,脊椎 flexor 肌肉得到了正确时间的刺激.
  • 在84%的步骤中,平板 flexor 肌肉得到了正确时间的刺激.
  • 刺激幅度的计算和传递准确度超过99.8%的近3000步骤.

结论:

  • 适应性FES系统有效地响应实时步态生物力学.
  • 进一步个性化AFES可能会提高中风幸存者的康复结果.
  • 这项技术显示出更具个性化和有效的中风后步行恢复的前景.