Patent ID: 7860573

Claim:
A method for providing stimulation of one or more discrete stimulation regions of a particular recipient's cochlea via a cochlea implant, comprising: measuring recipient-specific current spread functions in the form of a matrix of transimpedance values of electrode channels of an electrode array implanted in the particular recipient's cochlea and having electrodes mounted thereon; calculating values for a diagonal of said matrix of transimpedance values using said measured recipient-specific current spread functions; computing a matrix of transadmittance values using said matrix of measured transimpedance values; determining, using said matrix of transadmittance values, a vector of electrode currents that will produce a desired vector of stimulating voltages resulting in stimulation of said one or more discrete stimulation regions; and applying stimulation, through at least one of said electrodes, to the recipient's cochlea using said vector of electrode currents.