Development and Objective Evaluation of an EAS Cochlear Implant Model

Student thesis: Master thesis (including HD thesis)

  • Attila Fráter
4. term, Acoustics and Audio Technology, Master (Master Programme)
The project at hand attempts to implement a model capable of simulating combined electric and acoustic stimulation (EAS) in cochlear implant (CI) users. To model acoustic stimulation of human auditory system, the Matlab Auditory Periphery (MAP) model, developed by the Hearing Research Lab at the University of Essex, is used by adjustments to mimic a hearing loss. For modeling electric stimulation a CI model provided by Neurelec/Oticon Medical is used. The Goldwyn point process framework serves as a common platform for combination of the acoustic and electric part. The combination is based on the assumption of superposition of neural firing intensities evoked by the separate parts. The complete model is evaluated by the help of the neurogram similarity index measure (NSIM) and problems occurring during EAS (e.g. temporal desynchronization and place-mismatch) are investigated.
LanguageEnglish
Publication date3 Jun 2014
Number of pages81
External collaboratorOticon A/S, Kongebakken 9, DK-2765 Smørum
Søren Riis srka@oticonmedical.com
Other
ID: 198501781