Systems and methods for optimizing a compliance voltage of an auditory prosthesis

摘要

Exemplary systems and methods for optimizing a compliance voltage of an auditory prosthesis are disclosed. Each stimulation channel formed by electrodes that are coupled to an auditory prosthesis may have an adjustable current steering range associated therewith. Each adjustable current steering range is centered about the midpoint of its respective stimulation channel and defines a range of current steering that may be used within its respective stimulation channel. A compliance voltage of an auditory prosthesis may be optimized by setting a current steering range for one or more stimulation channels to a value that results in an optimum balance between power conservation and performance of the auditory prosthesis.

主权项

1. A system comprising:
a current steering management facility configured to set a current steering range for a stimulation channel defined by first and second physical electrodes communicatively coupled to an auditory prosthesis to be less than an entire physical range of the stimulation channel, the current steering range being centered about a midpoint of the stimulation channel; a mapping facility communicatively coupled to the current steering management facility and configured to map each frequency included in a frequency band associated with the stimulation channel to one or more virtual electrodes included in the current steering range of the stimulation channel; and a spectral analysis facility communicatively coupled to the mapping facility and configured to detect a frequency associated with an audio signal and included within the frequency band; wherein the current steering management facility is further configured to
identify, within the one or more virtual electrodes, a virtual electrode to which the detected frequency is mapped, anddirect the auditory prosthesis to apply electrical stimulation representative of the detected frequency to a stimulation site associated with the identified virtual electrode by concurrently stimulating the first physical electrode with a first current level and the second physical electrode with a second current level; and wherein a ratio of the first current level to the second current level is based on a position of the identified virtual electrode within the current steering range of the stimulation channel.