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Brain wave test may reveal hidden thoughts in brain injury patients

NCT ID NCT01899924

Knowledge-focused Sponsor: University Hospital, Limoges Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 completed study tested whether brain wave recordings (event-related potentials) can detect cognitive processing in people with brain injuries, including those with altered consciousness. Researchers compared 320 patients and healthy adults using high-density EEG. The goal was to see if the brain responds to tasks even when the person cannot speak or move.

What this could mean

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

What this could lead to
If successful, this could improve how doctors assess hidden cognitive function in patients with brain injuries, even if they cannot respond outwardly.
What could go wrong
This is an observational study, not a treatment trial. It may not lead to direct patient benefits, and results may not apply to all types of brain injury.

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 320 people

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

Started

Jul 2013

Finished

Jul 2018

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

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.

Control subjects Inclusion Criteria: * adults between 18 and 80, * written informed consent obtained from the subject, * covers by social insurance, * absence of psychoactive drug intake in the week preceding the examination or alcohol intake the day before the exam Exclusion Criteria: * pregnant patients or breastfeeding, * sensory deficit incompatible with the participation in tne study, * person under a legal protection measure, under guardianship, * psychoactive drug intake in the week preceding the examination or alcohol intake the day before the exam Patients : Inclusion Criteria: * adults between 18 and 80, * written informed consent obtained from the patient or his relatives, * covers by social insurance, * patients with either focal or diffuse brain damage drom trauma, vascular, tumor or other aetiologies, or with a history of neonatal or congenital diseases, * patients with selective cognitive disorders or with altered states of consciousness Exclusion Criteria: * Pregnant patients or breastfeeding, * sensory deficit incompatible with the participation in the study

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Conditions

The condition(s) this trial relates to.

brain injury

As listed by the trial registrant

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

Brain injuries

Contacts and locations

Locations

  • CHU of Limoges

    Limoges, 87042, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.