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Scientists investigate hidden hearing loss: can brain tests reveal the problem?

NCT ID NCT07230236

Knowledge-focused Sponsor: Istanbul University - Cerrahpasa Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study aims to better understand hidden hearing loss, a condition where people struggle to hear in noisy places despite normal standard hearing tests. Researchers will measure brain responses to sound and test speech understanding in noise in 63 adults. The goal is to see if these two tests are related, which could improve diagnosis of this condition.

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.

Participants

About 63 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2025

Expected to finish

Jun 2026

An estimate. End dates often move.

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.

Who is studied

Probability sample method will be used.

Ages

20 to 60 years

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 (Control group): * Being between 20 and 60 years of age, * Having bilateral pure-tone audiometry averages (500-1000-2000-4000 Hz) within the normal range (≤25 dB HL), * Having no tinnitus or auditory complaints, * Scoring 21 or above on the MoCA test, * Having no emotional or neurological problems that could interfere with the tests. Exclusion Criteria (Control group): * Presence of peripheral and/or central hearing loss, * Presence of somatosensory tinnitus, * Presence of emotional and/or neurological problems that could interfere with the tests. Inclusion Criteria (First study group): * Being between 20 and 60 years of age, * Having bilateral pure-tone audiometry averages (500-1000-2000-4000 Hz) within the normal range (≤25 dB HL), * Having a chronic tinnitus complaint (≥3 months), * Scoring 21 or above on the MoCA test, * Having no emotional or neurological problems that could interfere with the tests. Exclusion Criteria (First study group): * Presence of peripheral and/or central hearing loss, * Presence of somatosensory tinnitus, * Presence of emotional and/or neurological problems that could interfere with the tests. Inclusion Criteria (Second study group): * Being between 20 and 60 years of age, * Having bilateral pure-tone audiometry averages (500-1000-2000-4000 Hz) within the normal range (≤25 dB HL), * Having no chronic tinnitus complaint, * Having an average score below 4.3 on the "Speech Perception" subscale of the Speech, Spatial and Qualities of Hearing Scale (SSQ), * Scoring 21 or above on the MoCA test, * Having no emotional or neurological problems that could interfere with the tests. Exclusion Criteria (Second study group): * Presence of peripheral and/or central hearing loss, * Presence of somatosensory tinnitus, * Presence of emotional and/or neurological problems that could interfere with the tests.

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Conditions

The condition(s) this trial relates to.

Hearing Loss, Hidden

As listed by the trial registrant

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

Cochlear synaptopathy Hidden hearing loss

How to take part

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  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Istanbul University-Cerrahpaşa

    RECRUITING

    Istanbul, Turkey (Türkiye)

More trials for these conditions

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