Evaluation of micro-electrocorticographic electrodes for electrostimulation.
Chronic neural recording and stimulation on the surface of the cortex with macroelectrodes has been shown to be promising for treating a wide range of neurological deficits. To enhance the specificity of these devices, dense arrangements of small area electrodes have been microfabricated for precise recording and control of neural populations. In this study micro-electrocorticographic (microECoG) electrodes were evaluated for electrostimulation. Surface modification with electrodeposited iridium oxide (EIrOx) resulted in lower impedance, higher charge carrying capacity, and lower, more linear voltage excursions during current controlled stimulation.
Wilks
Seth J
SJ
Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907 USA. swilks@purdue.edu
Koivuniemi
Andrew S
AS
Thongpang
Sanitta
S
Williams
Justin C
JC
Otto
Kevin J
KJ
D004553:Electric Conductivity; D004599:Electric Stimulation Therapy / Q000295:instrumentation*; D004567:Electrodes, Implanted; D004569:Electroencephalography / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008839:Microelectrodes; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity