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Brain training device aims to restore joy in depression

NCT ID NCT06982820

Symptom relief Sponsor: GrayMatters Health Ltd. Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests a new treatment called Prism for people with major depression who have lost interest or pleasure in activities (anhedonia). Prism is a software device that uses neurofeedback to train the brain's reward system. About 170 participants will receive either real Prism therapy or a sham version to see if it improves mood and pleasure. The study uses MRI and EEG to measure brain activity.

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

About 170 people

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

Started

Jun 2025

Expected to finish

Aug 2027

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

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

Ages

22 to 75 years

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: 1. Primary Diagnosis of MDD with Anhedonia, established according to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition Text Revision (DSM5TR) - HDRS-17 score of ≥20, SHAPS-C score of ≥25. 2. Fluency in written and spoken English. 3. Able intellectually to understand the instructions 4. Ability to give signed, informed consent either written or electronic (via REDCap eConsent). 5. Normal or corrected-to-normal vision and hearing. 6. Ability to adhere to the study schedule. 7. Completed at least one antidepressant treatment course at an adequate dose and duration in the current episode per the ATRQ. Exclusion Criteria: 1. Contraindications to MRI (e.g., metal in the body, claustrophobia). 2. Any suicidal behavior in the past 1 year (i.e., actual attempt, interrupted attempt, aborted attempt, or preparatory acts or behavior) assessed using Columbia -Suicide Severity Rating Scale (C-SSRS) prior to screening and during the screening period. 3. Diagnosis for current moderate or severe substance or alcohol use disorder (SUD/AUD) within the past month (as defined in DSM-5-substance use disorder). 4. Any unstable medical condition, as per the clinical judgement of the investigator. 5. Any change in, or initiation of, fluoxetine within the past 8 weeks or of other SSRIs/SNRIs antidepressants, bupropion, stimulants, or other psychiatric medications within the past 4 weeks. 6. Recent initiation (within the past 2 months) of psychotherapy; continuation of established maintenance supportive therapy will be permitted. 7. Enrollment in another therapeutic clinical study at screening or within 2 months prior to screening or intended enrollment within the duration of this study.

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Conditions

The condition(s) this trial relates to.

Anhedonia Depression major depressive disorder

As listed by the trial registrant

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

Depressive disorder, major

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    3 sites in 2 countries. 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

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Butler Hospital

    RECRUITING

    Providence, Rhode Island, 02906, United States

  • Houston Center For Advanced Psychiatric Treatment

    RECRUITING

    Houston, Texas, 77401, United States

  • Sheba Medical Center

    RECRUITING

    Ramat Gan, Israel

More trials for these conditions

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