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Abstract:
Cochlear implants are electronic devices designed to take
advantage of the excitable, auditory nerve fibers that remain in
most deaf individuals. These devices produce sound sensations by
translating acoustic signals into electric stimuli that are
delivered to the nerve fibers by electrodes implanted in the
patient's cochlea. By modulating the stimuli based on the acoustic
input, patterns of spike activity are elicited that are designed to
produce hearing sensations that patients are able to interpret.
This presentation will describe the signal processing employed by
current devices and present speech-reception data that illustrate
the limitations these techniques impose.
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