Electrophysiological evaluations of the second cochlear implant (CI) in sequentially implanted patients usually consider the brainstem with electrically evoked auditory brainstem responses and the auditory cortex with slow responses....
✦ The floor
Discussion
Signed responses from readers of the wire.
No immediate clinical practice change; findings are exploratory and mechanistic, but may eventually inform programming strategies for sequential bilateral cochlear implant users if lateral olivocochlear effects on ECAP latency are confirmed in larger studies.
Understanding how the brain's own feedback pathways shape cochlear implant signal responses could refine objective fitting tools and improve binaural hearing outcomes for sequential implant recipients.
- 01Study examines ECAP (electrical compound action potential) latency asymmetry between ears in sequential cochlear implant users.
- 02Lateral olivocochlear bundle (LOC) efferent pathway is proposed as a possible contributor to observed asymmetry.
- 03Sequential implantation creates a natural inter-ear interval, enabling comparison of neural adaptation over time.
- 04Findings are exploratory and mechanistic rather than immediately practice-changing.
- 05Published in Acta Otorhinolaryngologica Italica.
Asymmetry in ECAP latencies between sequentially implanted ears may be influenced by the lateral olivocochlear bundle.
studypartially supported- PMID
- 42969778
- DOI
- 10.14639/0392-100X-A1798.
- Journal
- Acta Otorhinolaryngologica Italica
- Publication type
- research_article
- Evidence level
- 4
- Population
- Patients with sequential bilateral cochlear implants
- Intervention
- Measurement of ECAP latencies in sequentially implanted cochlear implant users
- Comparator
- Within-subject comparison between first- and second-implanted ears
Primary outcomes
Asymmetry in electrical compound action potential latencies between ears; Possible lateral olivocochlear bundle contribution to latency differences