Title :
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
fDate :
April 29 2009-May 2 2009
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; IrOx; 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;
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
DOI :
10.1109/NER.2009.5109313
