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Motor Unit Stimulation

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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Related Experiment Video

Updated: Jun 25, 2026

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

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

Published on: July 7, 2023

Patient-driven loop control for hand function restoration in a non-invasive functional electrical stimulation system.

Ying-Han Chiou¹, Jer-Junn Luh, Shih-Ching Chen

¹Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C.

Disability and Rehabilitation

|February 21, 2009

Summary

Stroke patients can regain hand function using a novel functional electrical stimulation (FES) system. This patient-driven loop control leverages residual muscle signals for effective rehabilitation and psychological benefits.

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Last Updated: Jun 25, 2026

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

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

Published on: July 7, 2023

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study

Published on: November 6, 2015

Area of Science:

Neuroscience
Biomedical Engineering
Rehabilitation Science

Background:

Stroke often results in impaired hand function, significantly impacting quality of life.
Restoring hand function is crucial for independence and daily activities in stroke survivors.

Purpose of the Study:

To design and validate a patient-driven loop control system for non-invasive functional electrical stimulation (FES).
To restore hand function in stroke patients by utilizing their residual capabilities.

Main Methods:

Developed an FES system controlled by electromyographic (EMG) signals from voluntary muscles.
Patients used their own EMG signals to adjust FES stimulus parameters.
Four stroke patients participated in experiments to test the system's efficacy.

Main Results:

The patient-driven FES system successfully restored hand functions like cylindrical grasp and lateral pinch in hemiplegic patients (77.5% success rate).
Patients experienced benefits in rehabilitation and psychological well-being by actively using residual capabilities.

Conclusions:

Patient-driven loop control in FES is effective for restoring hand function in hemiplegics.
This control strategy shows potential for broader application in assistive devices beyond FES.