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Electric fields aimed deep inside the brain without surgery – a new way to study the mind

NCT ID NCT07663578

Knowledge-focused Sponsor: University of California, Davis 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 explores how a technique called Temporally Interfering Electric Fields Stimulation (TIEFS) affects brain activity and thinking. TIEFS uses electrodes on the scalp to send electrical currents that can reach deep brain areas without surgery. Researchers will test it in adults with epilepsy who already have brain monitoring implants, as well as in healthy volunteers. Participants complete thinking tasks and have their brain signals recorded during brief stimulation sessions.

What this could mean

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

Active substance
Temporal Interference Electrical Stimulation (TIEFS)
What this could lead to
If successful, this could pave the way for a non-surgical brain stimulation treatment for epilepsy and other neurological conditions.
What could go wrong
This is a very small, early-stage study focused on measuring brain signals, not treating disease. The approach may not produce clear or clinically useful results.

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 15 people

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

Started

Apr 2025

Expected to finish

Apr 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 65 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: * Adult patients (age 18-65 years of age) undergoing an intracerebral electrophysiology study for epilepsy pre-surgical evaluation are eligible for inclusion. * For healthy control subjects are also eligible for inclusion (Scalp EEG measurements). * Participants must be able to sufficiently speak and understand English or Spanish for consent and be able to understand and complete cognitive tasks. * All subjects must have the ability to give valid informed consent. Exclusion Criteria: * No pregnant women will be recruited. * People with implanted electrical devices such as Deep Brain Stimulation devices or Pacemakers. * No prisoners will be recruited.

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Conditions

The condition(s) this trial relates to.

epilepsy

As listed by the trial registrant

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

Epilepsy

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

  • University of California Davis Medical Center

    RECRUITING

    Sacramento, California, 95817, United States

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