CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 45 enrolled
Drug / intervention
Treatment-modifications to CI speech processor program. Specifically reducing interaural frequency mismatch in experienced SSD-CI recipients. +2 moredevice
Likely dose
Not stated in record
Key inclusion· 6
  • ✓Adults 18 years of age and older
  • ✓Single-sided deafness with postlingual onset
  • ✓At least 6 months experience with cochlear implant or newly implanted
  • ✓Normal hearing in contralateral (non-implanted) ear: pure tone average at 500, 1000, 2000 Hz ≤30 dB HL
Key exclusion· 0

None specified.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05494632
NCT05494632N/ACompleted
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Effects of Interaural Frequency and Loudness Mismatch on SSD-CI Performance

Washington University School of Medicine·interventional·Posted Aug 10, 2022·Updated Mar 23, 2026

In Brief

A clinical study evaluating Treatment-modifications to CI speech processor program. Specifically reducing interaural frequency mismatch in experienced SSD-CI recipients., Treatment-modifications to CI speech processor program to reduced interaural frequency mismatch in newly implanted SSD-CI recipients., and 1 other intervention for Outcomes. Completed, enrolled 45 participants across 1 site.

Detailed Summary

Interaural loudness and pitch mismatch in single-sided deaf cochlear implant (SSD-CI) recipients reduces binaural processing cues and contributes to performance outcomes, specifically speech understanding in noise and localization. The study aims to improve binaural cues through speech processor program modifications that reduce interaural mismatches.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsOutcomes
CountriesUnited States
CollaboratorsCochlear

Timeline

N/ACompletedFinished
2023202420252026
First PostedAug 10, 2022
Enrollment StartAug 12, 2022
Primary CompletionJul 30, 2024
Study CompletionAug 1, 2025
TodayJul 2, 2026
Enrollment to primary: 2.0 yearsPosted 3.9 years ago

Interventions

Treatment-modifications to CI speech processor program. Specifically reducing interaural frequency mismatch in experienced SSD-CI recipients.device

We will modify the CI speech processor program to reduce interaural frequency mismatch between the CI ear and the contralateral ear in experienced CI recipients with SSD.

Treatment-modifications to CI speech processor program to reduced interaural frequency mismatch in newly implanted SSD-CI recipients.device

We will modify the CI speech processor program to reduce interaural frequency mismatch between the CI ear and the contralateral ear in newly implanted CI recipients with SSD.

Treatment-modifications to CI speech processor program to reduced interaural loudness mismatch in experienced SSD-CI recipients.device

We will modify the CI speech processor program to reduce interaural loudness mismatch between the CI ear and the contralateral ear in experienced CI recipients with SSD.