title: Characteristics of Skin-Electrode Impedance for a Novel Screw Electrode.
abstract: Our group has developed a novel dry electrode, the skin screw electrode, for EEG measurement. This electrode can be conveniently and rapidly installed on the human scalp requiring no electrolyte application and skin preparation. In this paper, we further evaluate the performance of this electrode by investigating its frequency-dependent electrical impedance at the skin-electrode interface. Comparing with the traditional disc electrode, we found that the two types of electrodes showed very different spectral properties. We also found that the impedance of the screw electrode decreases after coating with gold.
authors: Department of Neurosurgery, University of Pittsburgh, Pittsburgh, PA, USA.
authors: Wenyan
authors: W
authors: Jia
authors: Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA, USA.
authors: Jiamin
authors: J
authors: Wu
authors: Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA, USA.
authors: Di
authors: D
authors: Gao
authors: Department of Neurosurgery, University of Pittsburgh, Pittsburgh, PA, USA ; Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA, USA ; Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA drsun@pitt.edu.
authors: Mingui
authors: M
authors: Sun
keywords: EEG; dry electrode; electrical impedance
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