AUD503217_sm1.mp4 (9.6 MB)

Supplementary Material for: Cochlear Place of Stimulation Is One Determinant of Cochlear Implant Sound Quality

Download (9.6 MB)
dataset
posted on 29.10.2019 by Dorman M.F., CookNatale S., Baxter L., Zeitler D.M., Carlson M.L., Noble J.H.
Objective: Our aim was to determine the effect of acute changes in cochlear place of stimulation on cochlear implant (CI) sound quality. Design: In Experiment 1, 5 single-sided deaf (SSD) listeners fitted with a long (28-mm) electrode array were tested. Basal shifts in place of stimulation were implemented by turning off the most apical electrodes and reassigning the filters to more basal electrodes. In Experiment 2, 2 SSD patients fitted with a shorter (16.5-mm) electrode array were tested. Both basal and apical shifts in place of stimulation were implemented. The apical shifts were accomplished by current steering and creating a virtual place of stimulation more apical that that of the most apical electrode. Results: Listeners matched basal shifts by shifting, in the normal-hearing ear, the overall spectrum up in frequency and/or increasing voice pitch (F0). Listeners matched apical shifts by shifting down the overall frequency spectrum in the normal-hearing ear. Conclusion: One factor determining CI voice quality is the location of stimulation along the cochlear partition.

History

Licence

Exports

Logo branding

Categories

Licence

Exports