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Mind over matter: brain implant lets paralyzed patients control computers

NCT ID NCT00912041

Disease control Sponsor: Leigh R. Hochberg, MD, PhD. 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests the safety and feasibility of the BrainGate2 system, a brain-computer interface. Tiny sensors are placed in the brain area that controls movement, allowing people with tetraplegia (paralysis of all four limbs) to control a computer cursor or other assistive devices using their thoughts alone. Up to 27 participants with conditions like spinal cord injury or ALS will be enrolled, and the study focuses on safety and proof of concept.

What this could mean

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

Active substance
BrainGate2 neural interface system (implanted brain sensors connected to a computer)
What this could lead to
If successful, this could lead to a way for people with paralysis to control computers, wheelchairs, or other assistive devices using only their thoughts.
What could go wrong
This is a very early feasibility study with only 27 participants. The device requires brain surgery, which carries risks like infection or bleeding. It may not work for everyone or lead to a widely available product.

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 27 people

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

Start date

May 2009

Expected to finish

Dec 2038

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 80 years

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: * Clinical diagnosis of spinal cord injury, brainstem stroke, muscular dystrophy, amyotrophic lateral sclerosis or other motor neuron disorders * Complete or incomplete tetraplegia (quadriplegia) * Must live within a three-hour drive of the Study site * (There are additional inclusion criteria) Exclusion Criteria: * Visual impairment such that extended viewing of a computer monitor would be difficult even with ordinary corrective lenses * Chronic oral or intravenous steroids or immunosuppressive therapy * Other serious disease or disorder that could seriously affect ability to participate in the study * (There are additional exclusion criteria)

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Conditions

The condition(s) this trial relates to.

amyotrophic lateral sclerosis brain stem infarction locked-in syndrome muscular dystrophy quadriplegia spinal cord injury

As listed by the trial registrant

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

Amyotrophic lateral sclerosis Brain stem infarctions Locked-in syndrome Muscular dystrophy Spinal cord injuries Tetraplegia

How to take part

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

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    6 sites. The list below names each one and where it is.

  3. 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 ↗

  4. 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

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Baylor College of Medicine

    RECRUITING

    Houston, Texas, 77030, United States

    Contact Email: •••••@•••••

  • Emory University School of Medicine

    RECRUITING

    Atlanta, Georgia, 30322, United States

  • Massachusetts General Hospital

    RECRUITING

    Boston, Massachusetts, 02114, United States

  • Providence VA Medical Center

    RECRUITING

    Providence, Rhode Island, 02908, United States

  • Stanford University School of Medicine

    RECRUITING

    Stanford, California, 94305, United States

  • University of California, Davis

    RECRUITING

    Sacramento, California, 95817, United States

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