Coherence Between Brain Cortical Function and Neurocognitive Performance During Changed Gravity Conditions (CORTICOG)

August 4, 2015 updated by: University Hospital, Caen

Alongside a well-known physiological deconditioning, such as a decrease in muscle mass or bone demineralization, extended stays in weightlessness also cause cognitive dysfunction. However, the studies on this subject during space missions short or long term could not determine how these cognitive dysfunction resulted from a direct effect of weightlessness or a stress-related effect.

Analysis of electro-encephalography (EEG) using a standardized mapping method is used to study the changes of operation of the cerebral cortex as the near infrared spectroscopy (NIRS) is a reflection of changes in the cerebral hemodynamics. Their combined use is a relatively simple and economical method for studying brain changes in an environment where the normal brain imaging techniques can not be used.

The main objective of this experiment is to evaluate the alterations in brain cortical activity and brain oxygenation level induced by micro- and hypergravity conditions.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

24

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
    • Basse-Normandie
      • Caen CEDEX, Basse-Normandie, France, 14032
        • Umr Ucbn/Inserm U1075 Comete

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • healthy volunteers (men or women),
  • aged from 18 to 65,
  • affiliated to a Social Security system and, for non-French resident, holding an European Health Insurance Card (EHIC)
  • who accept to take part in the study,
  • who have given their written stated consent,
  • who already participated in parabolic flights (even in the same campaign)
  • All subjects will pass a medical examination similar to a standard aviation medical examination for private pilot aptitude (JAR FCL3 Class 2 medical examination). There will be no additional test performed for subject selection.

Exclusion Criteria:

  • Persons who took part in a previous biomedical research protocol, of which exclusion period is not terminated,
  • Persons with prior serious injuries to their head
  • Persons who take any medication or drugs influencing their central nervous system or cognitive performance
  • Pregnant women.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: EEG and NIRS measurements
Other: Parabolic flight
Other: EEG measurement
Electro cortical power in alpha frequency ranges (EEG-LORETA)
Other: NIRS measurements
Brain tissue oxygenation ( oxy- or deoxygenated hemoglobin values) - NIRS

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
alterations in brain cortical activity (EEG)
Time Frame: baseline
baseline
brain oxygenation level (NIRS)
Time Frame: baseline
baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Caen

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2010

Primary Completion (Actual)

November 1, 2013

Study Registration Dates

First Submitted

July 28, 2015

First Submitted That Met QC Criteria

August 4, 2015

First Posted (Estimate)

August 6, 2015

Study Record Updates

Last Update Posted (Estimate)

August 6, 2015

Last Update Submitted That Met QC Criteria

August 4, 2015

Last Verified

August 1, 2015

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 10-082

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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