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Brain zap tuning: could different electrical frequencies protect hand function during tumor surgery?

NCT ID NCT05023434

Knowledge-focused Sponsor: Medical College of Wisconsin 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study involves 20 people undergoing awake brain surgery for tumors near the hand movement area. Surgeons will test different electrical stimulation frequencies (10 to 250 Hz) to see which ones best identify or even improve hand movement. The goal is to develop a more precise way to map the brain during surgery, potentially reducing the risk of permanent hand weakness.

What this could mean

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

Active substance
Intraoperative direct electrical stimulation with varied parameters
What this could lead to
If successful, this could help surgeons better map hand movement areas during brain surgery, potentially reducing the risk of permanent hand weakness after tumor removal.
What could go wrong
This is a very small early study (20 people) focused on measurement methods, not treatment. It may not lead to any change in patient outcomes or surgical practice.

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 20 people

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

Started

Apr 2023

Expected to finish

Dec 2028

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 75 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.

AWAKE CRANIOTOMY COHORT Inclusion Criteria: 1. Age 18 - 75 2. Ability to understand a written informed consent document, and the willingness to sign it 3. Radiographic evidence of tumor on MRI (i.e. non-enhancing) invading primary motor cortex in the non-dominant hemisphere. 4. Karnofsky performance status (KPS) ≥ 70 5. Normal or near normal motor strength (i.e., at least 3/5 in relevant areas) 6. Normal or near normal speech (Can consistently name at least 4/5 cards) 7. Free of other illness, in the judgment of the investigator, that may shorten life expectancy 8. Willing and able to participate in all aspects of the study Exclusion Criteria: 1. Presence of other malignancy not in remission 2. Evidence of bi-hemispheric or widespread tumor involvement 3. Medically high-risk surgical candidate 4. History of recent scalp or systemic infection 5. Presence of other implants or foreign bodies in the head 6. Inability to receive an MRI for any reason 7. Inability to receive cortical stimulation for any reason 8. Presence of implanted cardiac device (such as a pacemaker or defibrillator)

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Conditions

The condition(s) this trial relates to.

brain cancer brain neoplasm

As listed by the trial registrant

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

Brain cancer Brain tumor Motor cortex; lesion

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

  • Medical College of Wisconsin

    RECRUITING

    Milwaukee, Wisconsin, 53226, United States

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