Oxygen shortage in body tissue Decrease in partial pressure of oxygen hypobaric hypoxia
Conditions
Interventions
Participants will be exposed to simulated altitudes of 300 (92 meters) and
15,000 feet (4572 meters) in a hypobaric chamber. At these altitudes RT, visual
scanning will be measured for stimuli prese
Sponsors
Royal Netherlands Air Force, Centre for Man in Aviation
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: Pilots of the Royal Netherlands Air Force Male Age 22-55 The pilots need to pass their mandatory medical examination and be declared "fit to fly".
Exclusion criteria
Exclusion criteria: Pilots exposed to altitudes higher than 8000 feet for a period longer than one week in the three months prior to the research.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary study parameter in this study is reaction time. Reaction time (in sec) will be measured from the moment a stimulus is presented till the participants press a right or left button | — |
Secondary
| Measure | Time frame |
|---|---|
| The following scondary study aparemeters will be measured: 1. The following response parameters will be measured during each of the visual tasks: 1. hits - correct identification of targets, 2. misses * error or omissions of target , 3. false alarms * error of commission and 4. anticipation - responses less than 200 ms following the onset of the stimulus. 2. Dwell time - Total duration of fixations made in the area of interest. Fixation is defined as the time between the end of one saccade and the beginning of the next one. Only fixations longer than 90 ms will be used in the analysis. 3. The participants* self-perceived state of alertness. The state of alertness will be assessed at the beginning and end of each test using the 7-point scale Sanford Sleepiness Scale (SSS). | — |
Countries
Netherlands
Outcome results
None listed