Effects of electrode size on the performance of neural recording microelectrodes

Michael P. Hughes, Karla Bustamante, Danny J. Banks, David J. Ewins

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

14 Scopus citations

Abstract

A significant factor in the optimisation of implantable electrodes for long-term neural recording is the effect electrode size has on the data collected. It is preferable to have as small an electrode as possible for improved selectivity (i.e. the ability to discriminate between different neurons), but reducing electrode size increases electrode impedance and thermal noise. In this paper we present the results of a study of action potentials recorded from locusts in vivo. Signals recorded from electrodes of dimensions between 4×4μm and 50×50μm are presented, with analyses of action potentials and recorded noise. It is observed that there appears to be an optimum electrode size of about 20×20μm, which presents the best compromise between size and recording characteristics.

Original languageBritish English
Title of host publication1st Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Proceedings
EditorsAndre Dittmar, David Beebe
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages220-223
Number of pages4
ISBN (Electronic)0780366034, 9780780366039
DOIs
StatePublished - 2000
Event1st Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology, MMB 2000 - Lyon, France
Duration: 12 Oct 200014 Oct 2000

Publication series

Name1st Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Proceedings

Conference

Conference1st Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology, MMB 2000
Country/TerritoryFrance
CityLyon
Period12/10/0014/10/00

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