Abstract: An implantable hearing prosthesis comprising an implantable upgrade module including a pre-processing unit configured to generate audio signals based on microphone information; and a implantable main module, physically separate from and electrically connected to the upgrade module. The implantable main module comprises a sound processing unit configured to generate stimulation information based on the audio signals received from the pre-processing unit, and a stimulator unit configured to generate stimulation signals based on the stimulation information. The hearing prosthesis also comprises a stimulation module configured to deliver the stimulation signals to a recipient.

Abstract: Automatically analysing an evoked neural response. The method comprises: applying electrical stimulation to a target neural region at incrementally greater current levels beginning with an initial current level that is as close as possible to a typical threshold-NRT level; recording an NRT measurement of an auditory signal which generated by the target neural region in response to the stimulation; and utilizing a machine-learned expert system to predict whether the NRT measurement contains a neural response based on a plurality of features extracted from the auditory signal.

Abstract: Aspects provide methods and sound processor for encoding stimulation signals to convey pitch perception information to a recipient. The method may comprise identifying a first stimulation site based on a selected frequency component of the sound signal that contains pitch perception information, wherein a stimulation signal is generated based on the selected frequency component; determining a second stimulation site adjacent to the first stimulation site; and determining a time delay between when the second stimulation site is independently stimulated with the stimulation signal and when the first stimulation site is independently stimulated with the stimulation signal.

Abstract: A medical stimulation device such as a cochlear implant configured to provide stimulation of one or more spatially-restricted contiguous portion(s) of the spiral array of auditory nerve fibers in the cochlear (“discrete stimulation regions”). Each discrete stimulation region is defined by the constructive and/or destructive interference of stimulating and limiting signals simultaneously applied to electrode channels of an implanted electrode array, the stimulating and limiting signals being determined based upon transimpedance measurements of intracochlear electrode channels of the implanted electrode array representing specific spread functions of an individual recipient. The stimulating signal is preferably applied through a targeted electrode channel; that is, one or more successive electrodes which is/are adjacent to the discrete stimulation region.