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Brain zaps show promise for silencing hallucinations

NCT ID NCT02769507

Symptom relief Sponsor: University of Bergen 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 a non-invasive brain stimulation technique called tDCS can reduce auditory hallucinations in people with psychotic disorders. Twenty-four participants received the stimulation while researchers measured changes in hallucination severity and brain activity. The goal was to see if this safe, drug-free approach could offer relief for a distressing symptom.

What this could mean

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

Active substance
transcranial direct current stimulation (tDCS) device
What this could lead to
If it works, this could point toward a non-drug treatment to ease auditory hallucinations in people with psychosis.
What could go wrong
This is a small, early study with only 24 participants. Results may not apply to everyone, and the effect may be modest or not last.

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

24 people

The number who actually took part.

Start date

Jul 2016

Finished

Mar 2020

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: * Diagnosed with schizophrenia spectrum disorder or other psychotic disorder * Frequent auditory hallucinations (at least 5 times a week). * Patients are on a stable dose of antipsychotic medication (which can also be zero) for at least 2 weeks. * Mentally competent for informed consent. * Provided informed consent. Exclusion Criteria: * Metal objects in or around the head that cannot be removed (i.e. cochlear implant, surgical clips, piercing) * History of seizures, or a history of seizures in first-degree relatives. * History of eye trauma with a metal object or professional metal workers * History of brain surgery, brain infarction, head trauma, cerebrovascular accident, broken skull, brain tumour, heart disease, cardiac pacemaker. * Skin disease on the scalp on the position of the tDCS electrodes * Coercive treatment based on a judicial ruling * Pregnancy in female patients

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Conditions

The condition(s) this trial relates to.

psychotic disorder Psychotic Disorders schizophrenia

As listed by the trial registrant

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

Psychotic disorders

Contacts and locations

Locations

  • University of Bergen

    Bergen, Hordaland, 5009, Norway

More trials for these conditions

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