Auditory Motion Perception by Bilateral Cochlear Implant Users With a Sound Coding Strategy that Synchronizes Peak-Picking Across the Ears

Bilateral cochlear implant (BiCI) users do not perform as well as typical hearing listeners when discriminating the direction of sound motion. This is likely due to the lack of synchronization between two independently operating sound processors. The use of bilaterally linked processors can improve the timing of electrical stimulation across the ears....

Bilateral cochlear implant users show persistent auditory motion perception deficits even with synchronized peak-picking coding strategies; audiologists should not expect current binaural coding approaches to restore motion perception and should counsel patients accordingly.

Persistent auditory motion perception deficits in bilateral CI users highlight a fundamental limitation of current sound coding strategies and point to a clear target for future signal processing research.

1. 01Synchronized peak-picking across bilateral CI ears did not normalize auditory motion perception.
2. 02Bilateral CI users showed significant deficits vs. normal-hearing controls in detecting sound movement.
3. 03Peak-picking synchronization is designed to improve binaural cues, but motion perception gaps remain.
4. 04Study published in Trends in Hearing, a peer-reviewed audiology journal.
5. 05Findings highlight need for improved binaural sound coding algorithms in bilateral CI fittings.

PMID

42422910

DOI

10.1177/23312165261465510.

Journal

Trends in Hearing

Publication type

research_article

Evidence level

2b

Population

Bilateral cochlear implant users and normal-hearing listeners

Intervention

Synchronized peak-picking sound coding strategy across bilateral cochlear implants

Comparator

Normal-hearing listeners