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Tweaking cochlear implants may help the deaf in one ear hear better in crowds

NCT ID NCT05494632

Knowledge-focused Sponsor: Washington University School of Medicine Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether changing the pitch and loudness settings on a cochlear implant (CI) could help people with single-sided deafness hear speech better in noisy places like restaurants. Researchers adjusted the CI programs of 45 adults to reduce the mismatch between the implanted ear and the normal-hearing ear. Participants then took a speech-in-noise test to compare their everyday program with the modified one.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
modified cochlear implant speech processor program
What this could lead to
If successful, this could lead to better hearing in noisy places for people with single-sided deafness who use a cochlear implant.
What could go wrong
This is a small, completed study (45 people) testing a device adjustment, not a new treatment. Results may not apply to all CI users or lead to a commercial product.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

45 people

The number who actually took part.

Started

Aug 2022

Finished

Aug 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Participants for the proposed study will be adults with single-sided deafness. Participants will have at least 6 months experience with their cochlear implant or will be newly implanted with the cochlear implant. Inclusion criteria for the experienced CI user group and the newly implant group are as follows: * 18 years of age and older * Postlingual onset of SSD * Pure tone average (PTA) at 500, 1000, and 2000 Hz of less than or equal to 30 dB HL in the contralateral ear, known as the normal hearing ear * Implanted with or chosen to be implanted with a Nucleus cochlear implant * Full insertion of electrode array Exclusion Criteria: * • Not meeting the inclusion criteria

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Conditions

The condition(s) this trial relates to.

deafness, unilateral

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Outcomes

Contacts and locations

Locations

  • Washington University School of Medicine

    St Louis, Missouri, 63110, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.