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...

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Bibliographic Details
Published in:	2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society Vol. 2009; pp. 5510 - 5513
Main Authors:	Wilks, S.J., Koivuniemi, A.S., Thongpang, S., Williams, J.C., Otto, K.J.
Format:	Conference Proceeding Journal Article
Language:	English
Published:	United States IEEE 01-01-2009
Subjects:	Biomedical engineering Electric Conductivity Electric Stimulation Therapy - instrumentation Electrodes Electrodes, Implanted Electroencephalography - instrumentation Equipment Design Equipment Failure Analysis Frequency measurement Microelectrodes Monitoring, Physiologic - instrumentation Platinum Pulse measurements Reproducibility of Results Sensitivity and Specificity Surface treatment Voltage measurement Welding Wire
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Summary:	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 (muECoG) electrodes were evaluated for electro stimulation. 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.
ISSN:	1094-687X 1557-170X 1558-4615
DOI:	10.1109/IEMBS.2009.5333178