Addressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses

Abstract The efferent control chain for an upper-limb myoelectric prosthesis can be separated into 3 key areas: signal generation, signal acquisition, and device response. Data were collected from twenty trans-radial myoelectric prosthesis users using their own clinically prescribed devices, to esta...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	A. Chadwell, L. Kenney, S. Thies, J. Head, A. Galpin, R. Baker
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f0ed5064a3ce425d84da3a4f75d36db7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f0ed5064a3ce425d84da3a4f75d36db7
record_format	dspace
spelling	oai:doaj.org-article:f0ed5064a3ce425d84da3a4f75d36db72021-12-02T12:09:51ZAddressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses10.1038/s41598-021-82764-62045-2322https://doaj.org/article/f0ed5064a3ce425d84da3a4f75d36db72021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82764-6https://doaj.org/toc/2045-2322Abstract The efferent control chain for an upper-limb myoelectric prosthesis can be separated into 3 key areas: signal generation, signal acquisition, and device response. Data were collected from twenty trans-radial myoelectric prosthesis users using their own clinically prescribed devices, to establish the relative impact of these potential control factors on user performance (user functionality and everyday prosthesis usage). By identifying the key factor(s), we can guide future developments to ensure clinical impact. Skill in generating muscle signals was assessed via reaction times and signal tracking. To assess the predictability of signal acquisition, we inspected reaction time spread and undesired hand activations. As a measure of device response, we recorded the electromechanical delay between electrode stimulation and the onset of hand movement. Results suggest abstract measures of skill in controlling muscle signals are poorly correlated with performance. Undesired activations of the hand or incorrect responses were correlated with almost all kinematics and gaze measures suggesting unpredictability is a key factor. Significant correlations were also found between several measures of performance and the electromechanical delay; however, unexpectedly, longer electromechanical delays correlated with better performance. Future research should focus on exploring causes of unpredictability, their relative impacts on performance and interventions to address this.A. ChadwellL. KenneyS. ThiesJ. HeadA. GalpinR. BakerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q A. Chadwell L. Kenney S. Thies J. Head A. Galpin R. Baker Addressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses
description	Abstract The efferent control chain for an upper-limb myoelectric prosthesis can be separated into 3 key areas: signal generation, signal acquisition, and device response. Data were collected from twenty trans-radial myoelectric prosthesis users using their own clinically prescribed devices, to establish the relative impact of these potential control factors on user performance (user functionality and everyday prosthesis usage). By identifying the key factor(s), we can guide future developments to ensure clinical impact. Skill in generating muscle signals was assessed via reaction times and signal tracking. To assess the predictability of signal acquisition, we inspected reaction time spread and undesired hand activations. As a measure of device response, we recorded the electromechanical delay between electrode stimulation and the onset of hand movement. Results suggest abstract measures of skill in controlling muscle signals are poorly correlated with performance. Undesired activations of the hand or incorrect responses were correlated with almost all kinematics and gaze measures suggesting unpredictability is a key factor. Significant correlations were also found between several measures of performance and the electromechanical delay; however, unexpectedly, longer electromechanical delays correlated with better performance. Future research should focus on exploring causes of unpredictability, their relative impacts on performance and interventions to address this.
format	article
author	A. Chadwell L. Kenney S. Thies J. Head A. Galpin R. Baker
author_facet	A. Chadwell L. Kenney S. Thies J. Head A. Galpin R. Baker
author_sort	A. Chadwell
title	Addressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses
title_short	Addressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses
title_full	Addressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses
title_fullStr	Addressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses
title_full_unstemmed	Addressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses
title_sort	addressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f0ed5064a3ce425d84da3a4f75d36db7
work_keys_str_mv	AT achadwell addressingunpredictabilitymaybethekeytoimprovingperformancewithcurrentclinicallyprescribedmyoelectricprostheses AT lkenney addressingunpredictabilitymaybethekeytoimprovingperformancewithcurrentclinicallyprescribedmyoelectricprostheses AT sthies addressingunpredictabilitymaybethekeytoimprovingperformancewithcurrentclinicallyprescribedmyoelectricprostheses AT jhead addressingunpredictabilitymaybethekeytoimprovingperformancewithcurrentclinicallyprescribedmyoelectricprostheses AT agalpin addressingunpredictabilitymaybethekeytoimprovingperformancewithcurrentclinicallyprescribedmyoelectricprostheses AT rbaker addressingunpredictabilitymaybethekeytoimprovingperformancewithcurrentclinicallyprescribedmyoelectricprostheses
_version_	1718394665446670336

Addressing unpredictability may be the key to improving performance with current clinically prescribed myoelectric prostheses

Ejemplares similares