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Perception Accuracy of a Multi-Channel Tactile Feedback System for Assistive Technology

Assistive technology uses multi-modal feedback devices, focusing on the visual, auditory, and haptic modalities. Tactile devices provide additional information via touch sense. Perception accuracy of vibrations depends on the spectral and temporal attributes of the signal, as well as on the body par...

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Detalles Bibliográficos
Autor principal: Wersényi, György
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9695395/
https://www.ncbi.nlm.nih.gov/pubmed/36433558
http://dx.doi.org/10.3390/s22228962
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author Wersényi, György
author_facet Wersényi, György
author_sort Wersényi, György
collection PubMed
description Assistive technology uses multi-modal feedback devices, focusing on the visual, auditory, and haptic modalities. Tactile devices provide additional information via touch sense. Perception accuracy of vibrations depends on the spectral and temporal attributes of the signal, as well as on the body parts they are attached to. The widespread use of AR/VR devices, wearables, and gaming interfaces requires information about the usability of feedback devices. This paper presents results of an experiment using an 8-channel tactile feedback system with vibrators placed on the wrists, arms, ankles, and forehead. Different vibration patterns were designed and presented using sinusoidal frequency bursts on 2, 4, and 8 channels. In total, 27 subjects reported their sensation formally and informally on questionnaires. Results indicate that 2 and 4 channels could be used simultaneously with high accuracy, and the transducers’ optimal placement (best sensitivity) is on the wrists, followed by the ankles. Arm and head positions were inferior and generally inadequate for signal presentation. For optimal performance, signal length should exceed 500 ms. Furthermore, the amplitude level and temporal pattern of the presented signals have to be used for carrying information rather than the frequency of the vibration.
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spelling pubmed-96953952022-11-26 Perception Accuracy of a Multi-Channel Tactile Feedback System for Assistive Technology Wersényi, György Sensors (Basel) Article Assistive technology uses multi-modal feedback devices, focusing on the visual, auditory, and haptic modalities. Tactile devices provide additional information via touch sense. Perception accuracy of vibrations depends on the spectral and temporal attributes of the signal, as well as on the body parts they are attached to. The widespread use of AR/VR devices, wearables, and gaming interfaces requires information about the usability of feedback devices. This paper presents results of an experiment using an 8-channel tactile feedback system with vibrators placed on the wrists, arms, ankles, and forehead. Different vibration patterns were designed and presented using sinusoidal frequency bursts on 2, 4, and 8 channels. In total, 27 subjects reported their sensation formally and informally on questionnaires. Results indicate that 2 and 4 channels could be used simultaneously with high accuracy, and the transducers’ optimal placement (best sensitivity) is on the wrists, followed by the ankles. Arm and head positions were inferior and generally inadequate for signal presentation. For optimal performance, signal length should exceed 500 ms. Furthermore, the amplitude level and temporal pattern of the presented signals have to be used for carrying information rather than the frequency of the vibration. MDPI 2022-11-19 /pmc/articles/PMC9695395/ /pubmed/36433558 http://dx.doi.org/10.3390/s22228962 Text en © 2022 by the author. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wersényi, György
Perception Accuracy of a Multi-Channel Tactile Feedback System for Assistive Technology
title Perception Accuracy of a Multi-Channel Tactile Feedback System for Assistive Technology
title_full Perception Accuracy of a Multi-Channel Tactile Feedback System for Assistive Technology
title_fullStr Perception Accuracy of a Multi-Channel Tactile Feedback System for Assistive Technology
title_full_unstemmed Perception Accuracy of a Multi-Channel Tactile Feedback System for Assistive Technology
title_short Perception Accuracy of a Multi-Channel Tactile Feedback System for Assistive Technology
title_sort perception accuracy of a multi-channel tactile feedback system for assistive technology
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9695395/
https://www.ncbi.nlm.nih.gov/pubmed/36433558
http://dx.doi.org/10.3390/s22228962
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