The within-subject design provides higher-quality comparative data on electrode performance than between-subject studies; audiologists and surgical teams should note the findings when counseling patients on electrode selection, though real-world implant choice is constrained by anatomy and surgeon preference.
Electrode design selection is one of the few modifiable surgical variables in cochlear implantation, and within-subject comparisons are the most rigorous way to isolate its effect on outcomes.
- 01Intrapatient (within-subject) design eliminates individual variability, strengthening the electrode comparison.
- 02Compares perimodiolar electrodes (closer to nerve fibers) versus lateral wall electrodes (along the outer cochlear wall).
- 03Published in Otology & Neurotology, a peer-reviewed specialist journal.
- 04Within-subject design is relatively rare in cochlear implant electrode research.
- 05Findings are directly relevant to surgical planning and device selection counseling.
An intrapatient comparison provides a more controlled evaluation of perimodiolar versus lateral wall electrode outcomes than between-subject designs.
studysupported- PMID
- 42087314
- DOI
- 10.1097/MAO.0000000000004915.
- Journal
- Otology & Neurotology
- Publication type
- research_article
- Evidence level
- 2b
- Population
- Cochlear implant recipients with both a perimodiolar and a lateral wall electrode (bilateral implantees or sequential implantees with different electrode types)
- Intervention
- Perimodiolar cochlear implant electrode
- Comparator
- Lateral wall cochlear implant electrode (within same patient)
Primary outcomes
Speech perception outcomes by electrode type; Intrapatient electrode performance comparison