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New Techniques Assisting Cochlear Implants Fitting

Measurement of Spread of Excitation (SoE) provides a potential method of assessment of cochlear implant users' benefit. To provide maximum benefit for the cochlear implant users the speech processor should be fitted to the patients 'need. One objective method that could deliver important information for fitting is Neural Response Telemetry (NRT). This method helps to estimate an amplitude of electrical current that is required to elicit hearing sensation via cochlear implant. It is also possible to determine Spread of Excitation - the longitudinal spread of electrically evoked neural excitation in the cochlea, based on NRT results. The parameters of the Spread of Excitation in the individual patient may help to explain the patients' performance and indicate in which way sound processing strategies could be modified to improve one's benefit. In this work measured profiles of SoE are shown, as well as some preliminary analyses are presented.

Authors: Czyzewski, Andrzej; Kostek, Bozena; Lorens, Artur; Walkowiak, Adam
Affiliations: Institute of Physiology and Pathology of Hearing, Warsaw, Poland ; Gdansk University of Technology, Multimedia Systems Department, Gdansk, Poland(See document for exact affiliation information.)
AES Convention:117 (October 2004) Paper Number:6287 Import into BibTeX
Session Subject:Psychoacoustics, Perception, and Listening Tests; Spatial Perception and Processing

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