Myoelectric signal from below the level of spinal cord injury as a command source for an implanted upper extremity neuroprosthesis - a case report

Abstract Implanted motor neuroprostheses offer significant restoration of function for individuals with spinal cord injury. Providing adequate user control for these devices is a challenge but is crucial for successful performance. Electromyographic (EMG) signals can serve as effective control sourc...

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Main Authors: Elizabeth Heald, Kevin Kilgore, Ronald Hart, Christa Moss, P. Hunter Peckham
Format: Article
Language:English
Published: BMC 2019-08-01
Series:Journal of NeuroEngineering and Rehabilitation
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12984-019-0571-3
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author Elizabeth Heald
Kevin Kilgore
Ronald Hart
Christa Moss
P. Hunter Peckham
author_facet Elizabeth Heald
Kevin Kilgore
Ronald Hart
Christa Moss
P. Hunter Peckham
author_sort Elizabeth Heald
collection DOAJ
description Abstract Implanted motor neuroprostheses offer significant restoration of function for individuals with spinal cord injury. Providing adequate user control for these devices is a challenge but is crucial for successful performance. Electromyographic (EMG) signals can serve as effective control sources, but the number of above-injury muscles suitable to provide EMG-based control signals is very limited. Previous work has shown the presence of below-injury volitional myoelectric signals even in subjects diagnosed with motor complete spinal cord injury. In this case report, we present a demonstration of a hand grasp neuroprosthesis being controlled by a user with a C6 level, motor complete injury through EMG signals from their toe flexor. These signals were successfully translated into a functional grasp output, which performed similarly to the participant’s usual shoulder position control in a grasp-release functional test. This proof-of-concept demonstrates the potential for below-injury myoelectric activity to serve as a novel form of neuroprosthesis control.
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spelling doaj.art-24a441bdec864e40a9439e81876c6fea2022-12-22T01:41:03ZengBMCJournal of NeuroEngineering and Rehabilitation1743-00032019-08-011611610.1186/s12984-019-0571-3Myoelectric signal from below the level of spinal cord injury as a command source for an implanted upper extremity neuroprosthesis - a case reportElizabeth Heald0Kevin Kilgore1Ronald Hart2Christa Moss3P. Hunter Peckham4Dept. of Biomedical Engineering, Case Western Reserve UniversityDept. of Biomedical Engineering, Case Western Reserve UniversityLouis Stokes Veterans Affairs Medical CenterDept. of Biomedical Engineering, Case Western Reserve UniversityDept. of Biomedical Engineering, Case Western Reserve UniversityAbstract Implanted motor neuroprostheses offer significant restoration of function for individuals with spinal cord injury. Providing adequate user control for these devices is a challenge but is crucial for successful performance. Electromyographic (EMG) signals can serve as effective control sources, but the number of above-injury muscles suitable to provide EMG-based control signals is very limited. Previous work has shown the presence of below-injury volitional myoelectric signals even in subjects diagnosed with motor complete spinal cord injury. In this case report, we present a demonstration of a hand grasp neuroprosthesis being controlled by a user with a C6 level, motor complete injury through EMG signals from their toe flexor. These signals were successfully translated into a functional grasp output, which performed similarly to the participant’s usual shoulder position control in a grasp-release functional test. This proof-of-concept demonstrates the potential for below-injury myoelectric activity to serve as a novel form of neuroprosthesis control.http://link.springer.com/article/10.1186/s12984-019-0571-3Spinal cord injuryNeuroprosthesisMyoelectric controlEMGFunctional restorationFunctional electrical stimulation (FES)
spellingShingle Elizabeth Heald
Kevin Kilgore
Ronald Hart
Christa Moss
P. Hunter Peckham
Myoelectric signal from below the level of spinal cord injury as a command source for an implanted upper extremity neuroprosthesis - a case report
Journal of NeuroEngineering and Rehabilitation
Spinal cord injury
Neuroprosthesis
Myoelectric control
EMG
Functional restoration
Functional electrical stimulation (FES)
title Myoelectric signal from below the level of spinal cord injury as a command source for an implanted upper extremity neuroprosthesis - a case report
title_full Myoelectric signal from below the level of spinal cord injury as a command source for an implanted upper extremity neuroprosthesis - a case report
title_fullStr Myoelectric signal from below the level of spinal cord injury as a command source for an implanted upper extremity neuroprosthesis - a case report
title_full_unstemmed Myoelectric signal from below the level of spinal cord injury as a command source for an implanted upper extremity neuroprosthesis - a case report
title_short Myoelectric signal from below the level of spinal cord injury as a command source for an implanted upper extremity neuroprosthesis - a case report
title_sort myoelectric signal from below the level of spinal cord injury as a command source for an implanted upper extremity neuroprosthesis a case report
topic Spinal cord injury
Neuroprosthesis
Myoelectric control
EMG
Functional restoration
Functional electrical stimulation (FES)
url http://link.springer.com/article/10.1186/s12984-019-0571-3
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