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Brain zaps for stroke recovery? tiny trial tests cerebellar implant

NCT ID NCT07190092

Disease control Sponsor: Jan Biziel University Hospital No 2 in Bydgoszcz Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests whether implanting a deep brain stimulation electrode in the cerebellum can reduce spasticity and improve motor function in 12 people who had a stroke 9 to 36 months ago. Participants will receive stimulation at three different frequencies (130, 70, and 30 Hz) combined with rehabilitation to find the most effective setting. It is an early, exploratory trial focused on safety and initial effectiveness.

What this could mean

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

Active substance
deep brain stimulation electrode implanted in the cerebellum
What this could lead to
If it works, this could point toward a new way to reduce muscle stiffness and improve movement in people with long-term post-stroke spasticity.
What could go wrong
This is a very small, early-phase trial with only 12 people, so results may not apply to everyone. Brain surgery carries risks like infection or bleeding, and the best stimulation settings are still unknown.

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 12 people

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

Started

Sep 2024

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 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: * One time stroke that occurred 9-36 months ago * Ischemic or hemorrhagic stroke * Spastic paresis of at least one limb * At least 3 months of poststroke rehabilitation in the past * No improvement of spasticity/motor function for at least 3 months Exclusion Criteria: * Seizures after the stroke * Depression * Severe sensory deficits * Anosognosia * Moderate to severe hemispatial neglect * Others contraindications for the DBS procedure, e.g. coagulopathy, decompensated chronic disease, etc. * Contraindication for MRI * No poststroke rehabilitation

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Conditions

The condition(s) this trial relates to.

Dystonia dystonic disorder

As listed by the trial registrant

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

Dystonia Post-stroke spasticity

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

  • Department of Neurosurgery and Neurology University Hospital nr 2 Collegium Medicum Nicolaus Copernicus University

    RECRUITING

    Bydgoszcz, 85-168, Poland

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