Noise analysis of NASICON ceramic dry electrodes

Author

Yacoub, Slim ; Novakov, Ed ; Guméry, Pierre-Yves ; Gondran, Chad ; Siebert, Elisabeth

Author_Institution

Lab. d´´Instrum. Micro-Inf. et Electron., Univ. Joseph Fourier, Grenoble, France

Volume

2

fYear

1995

fDate

20-23 Sep 1995

Firstpage

1553

Abstract

The noise and the impedance between two non-polarizable dry NASICON ceramic electrodes were investigated. The electrodes were placed on the ventral side of the forearm over inactive muscle area without contact paste. Significant noise was found in the bandwidth 1 Hz-100 Hz. This noise was more intense than the thermal noise of the resistive part of the electrode impedance, the amplifier voltage and current noise together. The power spectral density (PSD) of the observed noise follows an 1/f^α law with α=1,6 to 2. This excess noise probably has an electrochemical origin and can be related to the skin-electrode interface

Keywords

bioelectric potentials; biomedical equipment; biomedical measurement; ceramics; electrodes; noise; 1 to 100 Hz; NASICON ceramic dry electrodes; bioelectric signals recording; contact paste; electrochemical origin; electrode noise analysis; forearm ventral side; inactive muscle area; nonpolarizable electrodes; power spectral density; thermal noise; Bandwidth; Ceramics; Electrodes; Electromyography; Impedance measurement; Low-noise amplifiers; Noise measurement; Polarization; Skin; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-2475-7

Type

conf

DOI

10.1109/IEMBS.1995.579823

Filename

579823