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CNT/PDMS-based canal-typed ear electrodes for inconspicuous EEG recording

Authors
Lee, Joong HoonLee, Seung MinByeon, Hang JinHong, Joung SookPark, Kwang SukLee, Sang-Hoon
Issue Date
8월-2014
Publisher
IOP PUBLISHING LTD
Keywords
electroencephalogram (EEG); CNT/PDMS; ear electrode; inconspicuous recording; BCI; U-healthcare
Citation
JOURNAL OF NEURAL ENGINEERING, v.11, no.4
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF NEURAL ENGINEERING
Volume
11
Number
4
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/97784
DOI
10.1088/1741-2560/11/4/046014
ISSN
1741-2560
Abstract
Objective. Current electroencephalogram (EEG) monitoring systems typically require cumbersome electrodes that must be pasted on a scalp, making a private recording of an EEG in a public place difficult. We have developed a small, user friendly, biocompatible electrode with a good appearance for inconspicuous EEG monitoring. Approach. We fabricated carbon nanotube polydimethylsiloxane (CNT/PDMS)-based canal-type ear electrodes (CEE) for EEG recording. These electrodes have an additional function, triggering sound stimulation like earphones and recording EEG simultaneously for auditory brain-computer interface (BCI). The electrode performance was evaluated by a standard EEG measurement paradigm, including the detection of alpha rhythms and measurements of N100 auditory evoked potential (AEP), steady-state visual evoked potential (SSVEP) and auditory steady-state response (ASSR). Furthermore, the bio-and skin-compatibility of CNT/PDMS were tested. Main results. All feasibility studies were successfully recorded with the fabricated electrodes, and the biocompatibility of CNT/PDMS was also proved. Significance. These electrodes could be used to monitor EEG clinically, in ubiquitous health care and in brain-computer interfaces.
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