Figure 2.

Example of the voltage matrix, in V (a) of one subject (S35) collected during impedance field telemetry measurement with the MAESTRO software (MED-EL GmbH, Innsbruck, Austria). Measurement of electrodes’ impedance consists in activating one electrode at a time and then measuring the voltage detected by every electrode of the cochlear implant array. The resulting voltages are plotted as a function of the distance between the stimulating and the recording electrode expressed in number of electrodes (b).