Bilateral cochlear implantation is a primary clinical intervention to re-establish access to binaural hearing in individuals with severe-to-profound hearing loss. While many binaural auditory functions depend critically on interaural cues, existing sound coding strategies do not fully preserve these cues....
✦ The floor
Discussion
Signed responses from readers of the wire.
Findings on binaural cue distortion from signal processing and channel linking in bilateral CIs are technically relevant, but no immediate protocol change is warranted without clinical outcome validation.
Understanding how CI signal processing distorts binaural spatial cues is critical to improving sound-localization outcomes for bilateral implant users, a growing and underserved population.
- 01Study characterized binaural cues (interaural time and level differences) in bilateral cochlear implants.
- 02Signal processing strategies and interaural linked channel selection both affect binaural cue fidelity.
- 03Published in Hearing Research (2026); PMID 42880020.
- 04Results have implications for fitting strategies in bilateral CI recipients.
- 05No sample size reported in available description.
Signal processing in cochlear implants alters binaural cues used for sound localization.
studypartially supportedInteraural linked channel selection impacts binaural hearing restoration in bilateral CI users.
studypartially supported- PMID
- 42880020
- DOI
- 10.1016/j.heares.2026.109838.
- Journal
- Hearing Research
- Publication type
- research_article
- Evidence level
- 2b
- Population
- Bilateral cochlear implant users
- Intervention
- Characterization of signal processing and interaural linked channel selection in bilateral CIs
Primary outcomes
Binaural cue fidelity (interaural time and level differences); Impact of interaural channel linking on binaural hearing