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Altitude may fog your memory for plans

NCT ID NCT07585227

Knowledge-focused Sponsor: Direction Centrale du Service de Santé des Armées 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at whether being at a moderate altitude (like 4,000 meters) can hurt your ability to remember to do things later, called prospective memory. Fifty healthy adults will take memory tests while breathing low-oxygen air or normal air in a chamber. Researchers also want to see if breathing pure oxygen or regular air can help restore memory during low-oxygen exposure.

What this could mean

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

Active substance
Hypoxia exposure (simulated altitude of 4,000m)
What this could lead to
If it works, this could help us understand how altitude affects memory, which may improve safety for pilots, climbers, or others in low-oxygen environments.
What could go wrong
This is a small, early-stage study in healthy volunteers, not patients. The results may not apply to real-world altitude exposure or people with health conditions.

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 50 people

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

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Dec 2026

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 45 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: * Healthy volunteer * Has provided informed consent Exclusion Criteria: * Individuals who do not understand French * Pregnant or breastfeeding women * Cardiovascular risk factor * Infectious disease within the last 4 weeks * Chronic cardiovascular, respiratory, hematological, neurological, psychiatric, or metabolic disease * History of epileptic seizures, convulsions, or loss of consciousness * Individuals with migraines * History of a bleeding disorder * History of high blood pressure * Current medication use (excluding contraception) * History of episodes of altitude intolerance * Stay at high altitude (\> 3,500 m) within the last 3 months * Anxiety score on the Hospital Anxiety and Depression (HAD) scale \> 7 * Depression score on the HAD scale \> 7 * Uncontrollable claustrophobia or a history of panic attacks

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Conditions

The condition(s) this trial relates to.

altitude sickness brain hypoxia - ischemia Hypoxia Hypoxia, Brain

As listed by the trial registrant

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

Altitude Altitude hypoxia Hypoxia Hypoxia altitude simulation test Hypoxia in healthy individuals Hypoxia, altitude Hypoxia, brain Normobaric hypoxia

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

  • Institut de Recherche Biomédicale des Armées

    Brétigny-sur-Orge, 91220, France

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