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Custom-Fitted In- and Around-the-Ear Sensors for Unobtrusive and On-the-Go EEG Acquisitions: Development and Validation

Objectives: This paper aims to validate the performance and physical design of a wearable, unobtrusive ear-centered electroencephalography (EEG) device, dubbed “EARtrodes”, using early and late auditory evoked responses. Results would also offer a proof-of-concept for the device to be used as a conc...

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Autores principales: Valentin, Olivier, Viallet, Guilhem, Delnavaz, Aidin, Cretot-Richert, Gabrielle, Ducharme, Mikaël, Monsarat-Chanon, Hami, Voix, Jérémie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8122839/
https://www.ncbi.nlm.nih.gov/pubmed/33922456
http://dx.doi.org/10.3390/s21092953
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author Valentin, Olivier
Viallet, Guilhem
Delnavaz, Aidin
Cretot-Richert, Gabrielle
Ducharme, Mikaël
Monsarat-Chanon, Hami
Voix, Jérémie
author_facet Valentin, Olivier
Viallet, Guilhem
Delnavaz, Aidin
Cretot-Richert, Gabrielle
Ducharme, Mikaël
Monsarat-Chanon, Hami
Voix, Jérémie
author_sort Valentin, Olivier
collection PubMed
description Objectives: This paper aims to validate the performance and physical design of a wearable, unobtrusive ear-centered electroencephalography (EEG) device, dubbed “EARtrodes”, using early and late auditory evoked responses. Results would also offer a proof-of-concept for the device to be used as a concealed brain–computer interface (BCI). Design: The device is composed of a custom-fitted earpiece and an ergonomic behind-the-ear piece with embedded electrodes made of a soft and flexible combination of silicone rubber and carbon fibers. The location of the conductive silicone electrodes inside the ear canal and the optimal geometry of the behind-the-ear piece were obtained through morphological and geometrical analysis of the human ear canal and the region around-the-ear. An entirely conductive generic earpiece was also developed to assess the potential of a universal, more affordable solution. Results: Early latency results illustrate the conductive silicone electrodes’ capability to record quality EEG signals, comparable to those obtained with traditional gold-plated electrodes. Additionally, late latency results demonstrate EARtrodes’ capacity to reliably detect decision-making processes from the ear. Conclusions: EEG results validate the performance of EARtrodes as a circum-aural and intra-aural EEG recording system adapted for a wide range of applications in audiology, neuroscience, clinical research, and as an unobtrusive BCI.
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spelling pubmed-81228392021-05-16 Custom-Fitted In- and Around-the-Ear Sensors for Unobtrusive and On-the-Go EEG Acquisitions: Development and Validation Valentin, Olivier Viallet, Guilhem Delnavaz, Aidin Cretot-Richert, Gabrielle Ducharme, Mikaël Monsarat-Chanon, Hami Voix, Jérémie Sensors (Basel) Article Objectives: This paper aims to validate the performance and physical design of a wearable, unobtrusive ear-centered electroencephalography (EEG) device, dubbed “EARtrodes”, using early and late auditory evoked responses. Results would also offer a proof-of-concept for the device to be used as a concealed brain–computer interface (BCI). Design: The device is composed of a custom-fitted earpiece and an ergonomic behind-the-ear piece with embedded electrodes made of a soft and flexible combination of silicone rubber and carbon fibers. The location of the conductive silicone electrodes inside the ear canal and the optimal geometry of the behind-the-ear piece were obtained through morphological and geometrical analysis of the human ear canal and the region around-the-ear. An entirely conductive generic earpiece was also developed to assess the potential of a universal, more affordable solution. Results: Early latency results illustrate the conductive silicone electrodes’ capability to record quality EEG signals, comparable to those obtained with traditional gold-plated electrodes. Additionally, late latency results demonstrate EARtrodes’ capacity to reliably detect decision-making processes from the ear. Conclusions: EEG results validate the performance of EARtrodes as a circum-aural and intra-aural EEG recording system adapted for a wide range of applications in audiology, neuroscience, clinical research, and as an unobtrusive BCI. MDPI 2021-04-23 /pmc/articles/PMC8122839/ /pubmed/33922456 http://dx.doi.org/10.3390/s21092953 Text en © 2021 by the authors. 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
Valentin, Olivier
Viallet, Guilhem
Delnavaz, Aidin
Cretot-Richert, Gabrielle
Ducharme, Mikaël
Monsarat-Chanon, Hami
Voix, Jérémie
Custom-Fitted In- and Around-the-Ear Sensors for Unobtrusive and On-the-Go EEG Acquisitions: Development and Validation
title Custom-Fitted In- and Around-the-Ear Sensors for Unobtrusive and On-the-Go EEG Acquisitions: Development and Validation
title_full Custom-Fitted In- and Around-the-Ear Sensors for Unobtrusive and On-the-Go EEG Acquisitions: Development and Validation
title_fullStr Custom-Fitted In- and Around-the-Ear Sensors for Unobtrusive and On-the-Go EEG Acquisitions: Development and Validation
title_full_unstemmed Custom-Fitted In- and Around-the-Ear Sensors for Unobtrusive and On-the-Go EEG Acquisitions: Development and Validation
title_short Custom-Fitted In- and Around-the-Ear Sensors for Unobtrusive and On-the-Go EEG Acquisitions: Development and Validation
title_sort custom-fitted in- and around-the-ear sensors for unobtrusive and on-the-go eeg acquisitions: development and validation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8122839/
https://www.ncbi.nlm.nih.gov/pubmed/33922456
http://dx.doi.org/10.3390/s21092953
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