Chronic intracochlear electrical stimulation at high charge densities results in platinum dissolution but not neural loss or functional changes <i>in vivo</i>

Abstract

Chronic electrical stimulation of Pt electrodes at 267 or 400 µC/cm²/phase evoked a vigorous tissue response and produced Pt corrosion products that were located close to the electrode. Despite these changes at the electrode/tissue interface there was no evidence of neural loss or a reduction in neural function.