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Brain scans reveal how cochlear implants rewire hearing in One-Eared deafness

NCT ID NCT03117413

Knowledge-focused Sponsor: University Hospital, Toulouse 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 completed study used PET scans to examine brain changes in 20 people with asymmetric hearing loss who received a cochlear implant. Participants performed hearing and voice perception tests while their brain activity was measured. The goal was to understand how the central auditory system reorganizes after implantation, which could inform better hearing rehabilitation.

What this could mean

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

What this could lead to
If successful, this could help doctors understand how the brain adapts to cochlear implants, potentially improving future rehabilitation strategies.
What could go wrong
This is a small, observational study with only 20 participants. It is not testing a new treatment, so it will not directly improve hearing. Results may not apply to everyone with hearing loss.

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

20 people

The number who actually took part.

Started

Nov 2017

Finished

Mar 2019

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

Accepted

You do not need to have the condition being studied to take part.

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: * cochlear implantation\>3 months * signature of informed consent * affiliation to social service. Exclusion Criteria: * associated neurological disorder * protected subjects * epilepsy episodes * psychotropic medication * pregnancy

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Conditions

The condition(s) this trial relates to.

Deafness deafness, unilateral hearing loss disorder Tinnitus

As listed by the trial registrant

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

Profound hearing impairment

Contacts and locations

Locations

  • CERCO

    Toulouse, Midi-Pyrénées, 31052, France

  • CHU de Toulouse - Hôpital Purpan

    Toulouse, France, 31059, France

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