Cochlear implant stimulus phase duration can vary clinically to ensure adequate loudness growth while avoiding current-source compliance limits. These manipulations are typically done without consideration of any possible perceptual changes beyond loudness. However, limited reports in the literature suggest that changing phase duration can also impact pitch....
✦ The floor
Discussion
Signed responses from readers of the wire.
CI clinicians should be cautious that adjusting phase duration for loudness fitting purposes may have perceptual side effects on pitch perception, though the clinical magnitude requires further study before protocol changes.
Understanding whether phase-duration changes alter place-pitch perception is critical for optimizing cochlear implant fitting strategies without inadvertently degrading sound quality or pitch resolution.
- 01Study investigates whether phase duration changes in cochlear implant stimulation shift perceived pitch (place-pitch).
- 02Phase duration is a parameter audiologists adjust during CI fitting to manage loudness growth.
- 03Results characterize the perceptual consequences of this common clinical adjustment.
- 04Findings have direct implications for cochlear implant programming and fitting protocols.
- 05Clarifying place-pitch effects could improve music and speech perception outcomes for CI users.
Changing cochlear implant stimulus phase duration affects place-pitch perception.
studyunclearClinical loudness-growth adjustments via phase duration have perceptual consequences beyond loudness.
studypartially supported- PMID
- 42747292
- DOI
- 10.1121/10.0046504.
- Journal
- Journal of the Acoustical Society of America
- Publication type
- research_article
- Evidence level
- 4
- Population
- Cochlear implant users
- Intervention
- Variation in cochlear implant stimulus phase duration
- Comparator
- Baseline/standard phase duration conditions
Primary outcomes
Place-pitch perception; Perceptual effects of phase-duration changes on loudness and pitch