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Ear sensor may spot anxiety without needles or surgery

NCT ID NCT03954483

Knowledge-focused Sponsor: University of Manitoba 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study explores whether a non-invasive device placed in the outer ear can detect brain waves linked to anxiety, specifically the hippocampal theta rhythm. Researchers will give 42 healthy volunteers either buspirone, triazolam, or a placebo—drugs known to reduce these brain waves—to see if the ear device picks up the changes. If it works, it could lead to a simple way to diagnose anxiety disorders without invasive procedures.

What this could mean

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

Active substance
Buspirone and Triazolam oral tablets
What this could lead to
If successful, this could lead to a simple, non-invasive way to measure anxiety levels and help diagnose anxiety disorders.
What could go wrong
This is a small, early-stage study in healthy volunteers, not patients. It tests a measurement method, not a treatment, so direct benefits are uncertain.

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 42 people

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

Started

Oct 2023

Expected to finish

Oct 2027

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.

Ages

18 to 40 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: • Males and females who are between 18 and 40 years of age. Exclusion Criteria: * Psychological treatment in the past year or taking any psychiatric drug. * Drugs that interact with the study drugs or that have anxiolytic/anxiogenic properties. * Antibiotics or natural health products that inhibit/induce CYP3A4 or CYP2D6. * History of substance use disorder or family history of substance use disorder. * Pregnancy (or breastfeeding), left handedness, or colour blindness. * Individuals who have a current diagnosis, or history of, a neurological illness. * A history of stroke, head injury, loss of consciousness, epilepsy. * Kidney or liver disease/impairment. * COPD or sleep apnea. * Skin lesions involving the ear canal, self-reported or as assessed in examination at the lab. * Any unknown balance disorders, as assessed by investigator via balance test. * Major hearing loss, self-reported or as assessed by investigator via audiogram. * Allergic skin reactions to chemical agents including detergents. * Heart disease, lung disease or diabetes. * Influenza, Covid-19, or flu-like symptoms. * Recovering from an accident, injury, or operation.

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Conditions

The condition(s) this trial relates to.

anxiety anxiety disorder

As listed by the trial registrant

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

Anxiety

How to take part

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

  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

    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

  • Riverview Health Centre

    RECRUITING

    Winnipeg, Manitoba, R3L2P4, Canada

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