A computational study to model the effect of electrode-to-auditory nerve fiber distance on spectral resolution in cochlear implant.

ABSTRACT: Spectral ripple discrimination (SRD) has been widely used to evaluate the spectral resolution in cochlear implant (CI) recipients based on its strong correlation with speech perception performance. However, despite its usefulness for predicting speech perception outcomes, SRD performance exhibits large across-subject variabilities even among subjects implanted with the same CIs and sound processors. The potential factors of this observation include current spread, nerve survival, and CI mapping. Previous studies have found that the spectral resolution reduces with increasing distance of the stimulation electrode from the auditory nerve fibers (ANFs), attributable to increasing current spread. However, it remains unclear whether the spread of excitation is the only cause of the observation,

SUBMITTER: Yang H 

PROVIDER: S-EPMC7398541 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature