Effects of tonotopic matching and spatial cues on segregation of competing speech in simulations of bilateral cochlear implants.

ABSTRACT: In the clinical fitting of cochlear implants (CIs), the lowest input acoustic frequency is typically much lower than the characteristic frequency associated with the most apical electrode position, due to the limited electrode insertion depth. For bilateral CI users, electrode positions may differ across ears. However, the same acoustic-to-electrode frequency allocation table (FAT) is typically assigned to both ears. As such, bilateral CI users may experience both intra-aural frequency mismatch within each ear and inter-aural mismatch across ears. This inter-aural mismatch may limit the ability of bilateral CI users to take advantage of spatial cues when attempting to segregate competing speech. Adjusting the FAT to tonotopically match the electrode position in each ear (i.e., increasing t

SUBMITTER: Thomas M 

PROVIDER: S-EPMC9255761 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature