PEDOT coated microelectrode arrays for chronic neural recording and stimulation

Author

Venkatraman, Subramaniam ; Hendricks, Jeffrey ; Richardson-Burns, Sarah ; Jan, Edward ; Martin, David ; Carmena, Jose M.

Author_Institution

Electr. Eng. & Comput. Sci., Univ. of California, Berkeley, CA

fYear

2009

fDate

April 29 2009-May 2 2009

Firstpage

383

Lastpage

386

Abstract

The efficacy of conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) coatings was tested on microelectrodes for neural recording and stimulation. In vitro tests revealed that PEDOT coated electrodes were capable of injecting 15 times the charge of Platinum Iridium (PtIr) electrodes and Iridium Oxide (IrOx) coated electrodes when using constant current stimulation at zero voltage bias. Furthermore, in vivo chronic testing in rats revealed that PEDOT coated electrodes showed higher signal to noise recordings and superior charge capacity compared to PtIr electrodes.

Keywords

bioelectric phenomena; biomedical electrodes; biomedical materials; biomedical measurement; coatings; neurophysiology; polymers; IrO_x; PEDOT coated microelectrode arrays; PtIr; charge capacity; chronic neural recording; conducting polymer; constant current stimulation; in vivo chronic testing; iridium oxide coated electrodes; platinum iridium electrodes; poly(3,4-ethylenedioxythiophene) coating; rats; zero voltage bias; Electroencephalography; Frequency; Liquid crystal displays; Microelectrodes; Monitoring; Neural engineering; Noise cancellation; Phase measurement; Spectral analysis; Steady-state; PEDOT; chronic performance; microstimulation; recording;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Engineering, 2009. NER '09. 4th International IEEE/EMBS Conference on

Conference_Location

Antalya

Print_ISBN

978-1-4244-2072-8

Electronic_ISBN

978-1-4244-2073-5

Type

conf

DOI

10.1109/NER.2009.5109313

Filename

5109313