NDLI: Reverse-curve-arch-shaped dry EEG electrode for increased skin

Content Provider	IET Digital Library
Author	Lee, Jeong Su Han, Chung Min Kim, Jee Hoon Park, Kwang Suk
Abstract	Electroencephalography (EEG) is electrical brain activity that can be measured on the scalp with Ag/AgCl electrodes and conductive gel. However, time-consuming preparation procedures, dehydration of the gel, and skin irritation are crucial drawbacks of using such electrodes. Alternative approaches involving the use of spiky dry electrodes have their own drawbacks such as limited skin–electrode contact area, high skin–electrode impedance, and pain. Reverse-curve-arch-shaped dry EEG electrodes for use in increasing the skin–electrode contact area on hairy scalps are presented. The proposed electrode was fabricated from sterling silver using a three-dimensional printer. To increase the contact area between the skin and an electrode, an electrode was designed to have reverse-curve arches which were arranged in a row on the electrode base. The curvature of the arches was designed to match the curvature of the scalp to maximise the contact area and disperse the pressing force. To validate the proposed electrode design, comparison experiments for EEG and skin–electrode contact impedance were conducted, and the proposed electrode was found to perform better than a commercially available finger-type dry electrode.
Starting Page	1643
Ending Page	1645
Page Count	3
ISSN	00135194
Volume Number	51
e-ISSN	1350911X
Issue Number	Issue 21, Oct (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/51/21
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2015.1873
Journal	Electronics Letters
Publisher Date	2015-10-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Ag-AgCl Electrodes Bioelectric Potentials Bioelectric Signal Biology And Medical Computing Biomedical Electrodes Cellular Biophysics Conductive Gel Dehydration Digital Signal Processing Electrical Activity in Neurophysiological Processes Electrical Brain Activity Electrode Base Electrode Design Electrodiagnostics And Other Electrical Measurement Technique Electroencephalography Finger-type Dry Electrode Gels Gels And Sols Hairy Scalps Medical Signal Processing Neurophysiology Pressing Force Reverse-curve Arches Reverse-curve-arch-shaped Dry EEG Electrodes Scalp Curvature Signal Processing And Detection Skin Skin Irritation Skin-electrode Contact Area Skin-electrode Contact Impedance Three-dimensional Printer Time-consuming Preparation Procedures
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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