Joint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees

Abstract Accurate control of human limbs involves both feedforward and feedback signals. For prosthetic arms, feedforward control is commonly accomplished by recording myoelectric signals from the residual limb to predict the user’s intent, but augmented feedback signals are not explicitly provided...

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Autores principales:	Eric J. Earley, Reva E. Johnson, Jonathon W. Sensinger, Levi J. Hargrove
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3a1bd3fc1e7548e98d380a28f50e72dc
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spelling	oai:doaj.org-article:3a1bd3fc1e7548e98d380a28f50e72dc2021-12-02T13:19:22ZJoint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees10.1038/s41598-021-84795-52045-2322https://doaj.org/article/3a1bd3fc1e7548e98d380a28f50e72dc2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84795-5https://doaj.org/toc/2045-2322Abstract Accurate control of human limbs involves both feedforward and feedback signals. For prosthetic arms, feedforward control is commonly accomplished by recording myoelectric signals from the residual limb to predict the user’s intent, but augmented feedback signals are not explicitly provided in commercial devices. Previous studies have demonstrated inconsistent results when artificial feedback was provided in the presence of vision; some studies showed benefits, while others did not. We hypothesized that negligible benefits in past studies may have been due to artificial feedback with low precision compared to vision, which results in heavy reliance on vision during reaching tasks. Furthermore, we anticipated more reliable benefits from artificial feedback when providing information that vision estimates with high uncertainty (e.g. joint speed). In this study, we test an artificial sensory feedback system providing joint speed information and how it impacts performance and adaptation during a hybrid positional-and-myoelectric ballistic reaching task. We found that overall reaching errors were reduced after perturbed control, but did not significantly improve steady-state reaches. Furthermore, we found that feedback about the joint speed of the myoelectric prosthesis control improved the adaptation rate of biological limb movements, which may have resulted from high prosthesis control noise and strategic overreaching with the positional control and underreaching with the myoelectric control. These results provide insights into the relevant factors influencing the improvements conferred by artificial sensory feedback.Eric J. EarleyReva E. JohnsonJonathon W. SensingerLevi J. HargroveNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Eric J. Earley Reva E. Johnson Jonathon W. Sensinger Levi J. Hargrove Joint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees
description	Abstract Accurate control of human limbs involves both feedforward and feedback signals. For prosthetic arms, feedforward control is commonly accomplished by recording myoelectric signals from the residual limb to predict the user’s intent, but augmented feedback signals are not explicitly provided in commercial devices. Previous studies have demonstrated inconsistent results when artificial feedback was provided in the presence of vision; some studies showed benefits, while others did not. We hypothesized that negligible benefits in past studies may have been due to artificial feedback with low precision compared to vision, which results in heavy reliance on vision during reaching tasks. Furthermore, we anticipated more reliable benefits from artificial feedback when providing information that vision estimates with high uncertainty (e.g. joint speed). In this study, we test an artificial sensory feedback system providing joint speed information and how it impacts performance and adaptation during a hybrid positional-and-myoelectric ballistic reaching task. We found that overall reaching errors were reduced after perturbed control, but did not significantly improve steady-state reaches. Furthermore, we found that feedback about the joint speed of the myoelectric prosthesis control improved the adaptation rate of biological limb movements, which may have resulted from high prosthesis control noise and strategic overreaching with the positional control and underreaching with the myoelectric control. These results provide insights into the relevant factors influencing the improvements conferred by artificial sensory feedback.
format	article
author	Eric J. Earley Reva E. Johnson Jonathon W. Sensinger Levi J. Hargrove
author_facet	Eric J. Earley Reva E. Johnson Jonathon W. Sensinger Levi J. Hargrove
author_sort	Eric J. Earley
title	Joint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees
title_short	Joint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees
title_full	Joint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees
title_fullStr	Joint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees
title_full_unstemmed	Joint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees
title_sort	joint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3a1bd3fc1e7548e98d380a28f50e72dc
work_keys_str_mv	AT ericjearley jointspeedfeedbackimprovesmyoelectricprosthesisadaptationafterperturbedreachesinnonamputees AT revaejohnson jointspeedfeedbackimprovesmyoelectricprosthesisadaptationafterperturbedreachesinnonamputees AT jonathonwsensinger jointspeedfeedbackimprovesmyoelectricprosthesisadaptationafterperturbedreachesinnonamputees AT levijhargrove jointspeedfeedbackimprovesmyoelectricprosthesisadaptationafterperturbedreachesinnonamputees
_version_	1718393265604001792

Joint speed feedback improves myoelectric prosthesis adaptation after perturbed reaches in non amputees

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