Journal
JOURNAL OF NEURAL ENGINEERING
Volume 11, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1741-2560/11/4/046014
Keywords
electroencephalogram (EEG); CNT/PDMS; ear electrode; inconspicuous recording; BCI; U-healthcare
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Funding
- Korea Healthcare technology R&D Project, Ministry for Health, Welfare & Family Affairs, Republic of Korea [A09205212210000200, HI09C13540200]
- National Research Foundation of Korea [22A20130011025] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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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