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RECRUITING
NCT05558514
NA

Place-based Cochlear Implant Mapping

Sponsor: Western University, Canada

View on ClinicalTrials.gov

Summary

The current standard of care approach for programming cochlear implants uses a generalized pitch-map for all patients. This approach fails to account for individualized inner ear anatomy. As a result, many cochlear implant recipients experience place-pitch mismatch. We have recently developed an automated mathematical tool to produce patient-specific, customized cochlear implant pitch-maps (Helpard et al., 2021). In this study, cochlear implant recipients will be randomized to receive either the clinical default pitch-map (the control group) or a place-based pitch-map (the intervention group). Assessments will be conducted at multiple time-intervals to account for patient acclimation and plasticity to both the generalized and individualized pitch-maps. Audiological assessments will be tuned to identify patients' ability to discern pitch scaling and variation in sounds, as well as to understand complexities in speech such as mood and tone. Audiological testing will be conducted in collaboration with the National Centre for Audiology (London, ON) to ensure that the most accurate and relevant metrics are applied.

Official title: Performance Comparisons With Default Versus Place-based Maps

Key Details

Gender

All

Age Range

18 Years - Any

Study Type

INTERVENTIONAL

Enrollment

30

Start Date

2023-06-07

Completion Date

2026-05

Last Updated

2025-03-28

Healthy Volunteers

No

Interventions

OTHER

Place-based cochlear implant mapping

Pre-operative, 3D CT scans of the temporal bone will be uploaded into a deep learning-based tool which automatically resamples, crops, segments, analyzes, and measures the patient's specific cochlear anatomy. These measurements will be input into an individualized pitch mapping function to determine a patient-specific tonotopic distribution of frequencies (place-based map). At device activation (approximately 1 month post-surgery) CIs will be programmed according to the place-based map.

OTHER

Default cochlear implant mapping

At device activation (approximately 1 month post-surgery) CIs will be programmed according to the clinical default program.

Locations (1)

Western University

London, Ontario, Canada