Abstract
A three-dimensional, finite-element field model of intracochlear electrical stimulation using a pure radial, bipolar electrode configuration is presented. Fiber potential profiles and longitudinal potential spread functions to a step function electrode potential input are evaluated with regard to placement of the electrode array within scala tympani . These model results suggest that bipolar electrode placement within scala tympani significantly affects the potential patterns created in the vicinity of the n eural elements. In the particular case where the bipolar electrode is near the lateral wall of scala tympani, uniform, n early constant potential profiles are generated near the fibers and many of the unique defining character ist ics of
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