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Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses

The main goal of this study is to evaluate how to optimally select the best vibrotactile pattern to be used in a closed loop control of upper limb myoelectric prostheses as a feedback of the exerted force. To that end, we assessed both the selection of actuation patterns and the effects of the selec...

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Detalles Bibliográficos
Autores principales: Gonzalez-Rodriguez, Andrea, Ramon, Jose L., Morell, Vicente, Garcia, Gabriel J., Pomares, Jorge, Jara, Carlos A., Ubeda, Andres
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6928933/
https://www.ncbi.nlm.nih.gov/pubmed/31795067
http://dx.doi.org/10.3390/s19235209
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author Gonzalez-Rodriguez, Andrea
Ramon, Jose L.
Morell, Vicente
Garcia, Gabriel J.
Pomares, Jorge
Jara, Carlos A.
Ubeda, Andres
author_facet Gonzalez-Rodriguez, Andrea
Ramon, Jose L.
Morell, Vicente
Garcia, Gabriel J.
Pomares, Jorge
Jara, Carlos A.
Ubeda, Andres
author_sort Gonzalez-Rodriguez, Andrea
collection PubMed
description The main goal of this study is to evaluate how to optimally select the best vibrotactile pattern to be used in a closed loop control of upper limb myoelectric prostheses as a feedback of the exerted force. To that end, we assessed both the selection of actuation patterns and the effects of the selection of frequency and amplitude parameters to discriminate between different feedback levels. A single vibrotactile actuator has been used to deliver the vibrations to subjects participating in the experiments. The results show no difference between pattern shapes in terms of feedback perception. Similarly, changes in amplitude level do not reflect significant improvement compared to changes in frequency. However, decreasing the number of feedback levels increases the accuracy of feedback perception and subject-specific variations are high for particular participants, showing that a fine-tuning of the parameters is necessary in a real-time application to upper limb prosthetics. In future works, the effects of training, location, and number of actuators will be assessed. This optimized selection will be tested in a real-time proportional myocontrol of a prosthetic hand.
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spelling pubmed-69289332019-12-26 Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses Gonzalez-Rodriguez, Andrea Ramon, Jose L. Morell, Vicente Garcia, Gabriel J. Pomares, Jorge Jara, Carlos A. Ubeda, Andres Sensors (Basel) Article The main goal of this study is to evaluate how to optimally select the best vibrotactile pattern to be used in a closed loop control of upper limb myoelectric prostheses as a feedback of the exerted force. To that end, we assessed both the selection of actuation patterns and the effects of the selection of frequency and amplitude parameters to discriminate between different feedback levels. A single vibrotactile actuator has been used to deliver the vibrations to subjects participating in the experiments. The results show no difference between pattern shapes in terms of feedback perception. Similarly, changes in amplitude level do not reflect significant improvement compared to changes in frequency. However, decreasing the number of feedback levels increases the accuracy of feedback perception and subject-specific variations are high for particular participants, showing that a fine-tuning of the parameters is necessary in a real-time application to upper limb prosthetics. In future works, the effects of training, location, and number of actuators will be assessed. This optimized selection will be tested in a real-time proportional myocontrol of a prosthetic hand. MDPI 2019-11-28 /pmc/articles/PMC6928933/ /pubmed/31795067 http://dx.doi.org/10.3390/s19235209 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gonzalez-Rodriguez, Andrea
Ramon, Jose L.
Morell, Vicente
Garcia, Gabriel J.
Pomares, Jorge
Jara, Carlos A.
Ubeda, Andres
Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses
title Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses
title_full Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses
title_fullStr Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses
title_full_unstemmed Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses
title_short Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses
title_sort evaluation of optimal vibrotactile feedback for force-controlled upper limb myoelectric prostheses
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6928933/
https://www.ncbi.nlm.nih.gov/pubmed/31795067
http://dx.doi.org/10.3390/s19235209
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