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Ear zaps may tweak Breathing—But only in the lab

NCT ID NCT07482930

Knowledge-focused Sponsor: SEFA HAKTAN HATIK 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at whether a 10-minute, non-invasive electrical stimulation on the outer ear can temporarily affect lung function in healthy adults aged 18-40. Participants will be randomly assigned to receive either real stimulation or a sham (fake) version, and will do breathing tests before and after. The goal is to understand how the vagus nerve might influence breathing, not to treat any disease. There is no direct benefit to participants, and side effects are usually mild (like tingling or warmth at the ear).

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 50 people

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

Started

Mar 2026

Expected to finish

Apr 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.

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: * Aged 18-40 years. * Healthy volunteers. * Able to perform spirometry and follow study instructions. * Provided written informed consent. Exclusion Criteria: * Any cardiovascular disease, cardiac arrhythmia, hypertension, or related condition. * Any neurological disorder (e.g., diabetes mellitus, peripheral neuropathy, epilepsy). * Any diagnosed psychiatric disorder. * Any respiratory disease (e.g., asthma, chronic obstructive pulmonary disease). * Pregnancy or suspected pregnancy. * Ear conditions that prevent stimulation (infection, open wound, pain/tenderness) or presence of a piercing at/near the stimulation site. * Vigorous exercise within 24 hours prior to measurement. * Caffeine intake, smoking, or alcohol consumption within 4-6 hours prior to measurement. * Marked intolerance or hypersensitivity to the device or the procedure. * Inability to follow instructions during measurements or refusal to complete the session.

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As listed by the trial registrant

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

Autonomic nervous system (ANS) functioning and mood state Blood pressure monitoring Respiratory function tests Spirometry Vagus nerve stimulations

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

  • Güzelyurt Neighborhood, Mustafa Bozkurt Street, No: 9, 57900, Türkeli, Sinop, Türkiye

    RECRUITING

    Sinop, 57900, Turkey (Türkiye)

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