Effect of Electrode Impedance on Spread of Excitation and Pitch Perception Using Electrically Coupled 'Dual-Electrode' Stimulation

摘要

Objectives: In newer-generation Cochlear Ltd. cochlear implants, two adjacent electrodes can be electrically coupled to produce a single contact or "dual electrode" (DE). The goal of the present study was to evaluate whether relatively large impedance differences (>3.0 kOhms) between coupled electrodes affect the excitation pattern and pitch percepts produced by the DE.