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Related Concept Videos

Reflex Activity01:08

Reflex Activity

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A reflex activity is an automatic, involuntary response to specific stimuli. It is a part of our survival mechanism, designed to protect us from potential harm. For example, when a bright light suddenly shines into our eyes, we instinctively close them or look away. This is a simple reflex activity orchestrated by the nervous system without conscious thought or effort.
A reflex exam is a diagnostic procedure performed by a healthcare professional to evaluate the functionality of a patient's...
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A Human-machine-interface Integrating Low-cost Sensors with a Neuromuscular Electrical Stimulation System for Post-stroke Balance Rehabilitation
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A functional electrical stimulation system for human walking inspired by reflexive control principles.

Lin Meng1,2, Bernd Porr1, Catherine A Macleod2

  • 11 Division of Biomedical Engineering, University of Glasgow, Glasgow, UK.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
|March 24, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a novel multichannel functional electrical stimulation (FES) gait-assist system. The system successfully synchronized muscle activation and promoted hip/ankle movement in healthy volunteers during treadmill walking.

Keywords:
Functional electrical stimulationgait assistancehuman walkingreflexive mechanismrehabilitation

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Area of Science:

  • Biomedical Engineering
  • Robotics
  • Neurorehabilitation

Background:

  • Functional electrical stimulation (FES) systems are being developed to assist with bipedal walking.
  • Existing FES control strategies can be complex, necessitating simpler, effective models.

Purpose of the Study:

  • To present and evaluate a multichannel FES gait-assist system utilizing a purely reflexive control algorithm.
  • To assess the system's ability to synchronize muscle activation and promote functional gait movements.

Main Methods:

  • A multichannel FES system was developed, incorporating a reflexive control algorithm based on transfer functions.
  • Sensory signals, primarily ground contact information, were translated into muscle activation commands.
  • The system's efficacy was tested on seven healthy volunteers during FES-assisted and unassisted treadmill walking.

Main Results:

  • The FES system successfully synchronized muscle activation patterns throughout the gait cycle.
  • Functional hip and ankle movements were promoted by the FES assistance.
  • The system demonstrated effectiveness in enhancing gait function during treadmill walking.

Conclusions:

  • The developed multichannel FES gait-assist system, using a reflexive control strategy, is effective in assisting bipedal walking.
  • Human-inspired robotic system principles can inform the design of assistive walking devices.
  • This approach shows promise for future applications in rehabilitation and assistive technology.