A microcontroller system for investigating the catch effect: Functional electrical stimulation of the common peroneal nerve
A microcontroller system for investigating the catch effect: Functional electrical stimulation of the common peroneal nerve
Correction of drop foot in hemiplegic gait is achieved by electrical stimulation of the common peroneal nerve with a series of pulses at a fixed frequency. However, during normal gait, the electromyographic signals from the tibialis anterior muscle indicate that muscle force is not constant but varies during the swing phase. The application of double pulses for the correction of drop foot may enhance the gait by generating greater torque at the ankle and thereby increase the efficiency of the stimulation with reduced fatigue. A flexible controller has been designed around the Odstock Drop Foot Stimulator to deliver different profiles of pulses implementing doublets and optimum series. A peripheral interface controller (PIC) microcontroller with some external circuits has been designed and tested to accommodate six profiles. Preliminary results of the measurements from a normal subject seated in a multi-moment chair (an isometric torque measurement device) indicate that profiles containing doublets and optimum spaced pulses look favourable for clinical use.
Neuromuscular stimulation, Catch effect, Doublets, Hemiplegia, Gait, Microcontroller, PIC, Deboo integrator
438-448
Hart, D J
6997deb6-f3a1-4cf1-a087-4b76a1c88777
Taylor, P N
943d882e-495b-4acc-8f05-335ee4abad63
Chappell, P H
2d2ec52b-e5d0-4c36-ac20-0a86589a880e
Wood, D E
94d14c44-4ea7-40f5-98c1-e721c1cafe0d
Clift, Sally
bea7b3db-c96b-40c3-9952-0f3d889af483
June 2006
Hart, D J
6997deb6-f3a1-4cf1-a087-4b76a1c88777
Taylor, P N
943d882e-495b-4acc-8f05-335ee4abad63
Chappell, P H
2d2ec52b-e5d0-4c36-ac20-0a86589a880e
Wood, D E
94d14c44-4ea7-40f5-98c1-e721c1cafe0d
Clift, Sally
bea7b3db-c96b-40c3-9952-0f3d889af483
Hart, D J, Taylor, P N, Chappell, P H and Wood, D E
,
Clift, Sally
(ed.)
(2006)
A microcontroller system for investigating the catch effect: Functional electrical stimulation of the common peroneal nerve.
Medical Engineering & Physics, 28 (5), .
Abstract
Correction of drop foot in hemiplegic gait is achieved by electrical stimulation of the common peroneal nerve with a series of pulses at a fixed frequency. However, during normal gait, the electromyographic signals from the tibialis anterior muscle indicate that muscle force is not constant but varies during the swing phase. The application of double pulses for the correction of drop foot may enhance the gait by generating greater torque at the ankle and thereby increase the efficiency of the stimulation with reduced fatigue. A flexible controller has been designed around the Odstock Drop Foot Stimulator to deliver different profiles of pulses implementing doublets and optimum series. A peripheral interface controller (PIC) microcontroller with some external circuits has been designed and tested to accommodate six profiles. Preliminary results of the measurements from a normal subject seated in a multi-moment chair (an isometric torque measurement device) indicate that profiles containing doublets and optimum spaced pulses look favourable for clinical use.
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Hart_catch_effect.pdf
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More information
Published date: June 2006
Keywords:
Neuromuscular stimulation, Catch effect, Doublets, Hemiplegia, Gait, Microcontroller, PIC, Deboo integrator
Organisations:
EEE
Identifiers
Local EPrints ID: 262386
URI: http://eprints.soton.ac.uk/id/eprint/262386
ISSN: 1350-4533
PURE UUID: 58cc59c2-3585-4914-a5fc-193322b0cc0f
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Date deposited: 24 Apr 2006
Last modified: 14 Mar 2024 07:10
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Contributors
Author:
D J Hart
Author:
P N Taylor
Author:
P H Chappell
Author:
D E Wood
Editor:
Sally Clift
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