PMID-18057508[0] Complex impedance spectroscopy for monitoring tissue responses to inserted neural implants.
- In general, impedance magnitude at 1 kHz was significantly increased in extensive reactions, starting about 4 days post-implant
- Impedance is hence predictive of performance.
- Electrodes with extensive reactions also displayed impedance spectra with a characteristic change at high frequencies. This change was manifested in the formation of a semi-circular arc in the Nyquist space, suggestive of increased cellular density in close proximity to the electrode site.
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[0] Williams JC, Hippensteel JA, Dilgen J, Shain W, Kipke DR, Complex impedance spectroscopy for monitoring tissue responses to inserted neural implants.J Neural Eng 4:4, 410-23 (2007 Dec) |
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