On the Noise Performance of Pt Electrodes

Author

Xiao Liu ; Demosthenous, A. ; Donaldson, N.

Author_Institution

Univ. Coll. London, London

fYear

2007

fDate

22-26 Aug. 2007

Firstpage

434

Lastpage

436

Abstract

We measured the noise and impedance from Pt electrode pairs in a frequency band from 100 Hz to 10 kHz, containing the ENG band (500 Hz ~ 5 kHz). The results show that the Pt electrode noise is the same as the thermal noise from the real part of the electrode impedance, which is a summation of the polarisation resistance and the access resistance. This differs from Ag-AgCl electrodes for which the electrode noise has been reported to be higher than the thermal noise. Our study shows that Pt electrodes are suitable for neural recording.

Keywords

bioelectric potentials; biomedical electrodes; neurophysiology; platinum; prosthetics; thermal noise; ENG band; Pt; access resistance; electrode impedance; electrode noise; electroneurogram signal; frequency 100 Hz to 10 kHz; neural recording; neuroprostheses; noise performance; platinum electrodes; polarisation resistance; thermal noise; 1f noise; Conductors; Electrodes; Frequency; Immune system; Impedance measurement; Low-frequency noise; Noise measurement; Polarization; Thermal resistance; Electric Impedance; Electrodes; Electrophysiology; Ion Transport; Models, Theoretical; Neurons; Silver; Silver Compounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE

Conference_Location

Lyon

ISSN

1557-170X

Print_ISBN

978-1-4244-0787-3

Type

conf

DOI

10.1109/IEMBS.2007.4352316

Filename

4352316