CO2 Effects on Memory when Combined with 28 Hours of Continuous Wakefulness
Abstract
The current study investigated the combined effects of low levels of CO2 exposure and 28 hours of continuous wakefulness on memory. The combination of these two stressors were compared to a well-rested baseline and each stressor alone. A total of 6 participants enrolled in the study, with 3 completing all 4 phases and 4 completing at least 3 phases. The fourth phase for the participant who completed 3 phases was estimated using the condition mean for each session, resulting in a sample size of 4. Analysis of the memory task did not show a statistical difference among the conditions, but the number correct and number incorrect were better at session 1 than the other two sessions, regardless of the condition. The conditions involving sleep deprivation, however, tended to be worse than the gas alone condition, although not statistically significant. The mood analyses did demonstrate differences among the conditions. Generally, the conditions involving sleep deprivation showed lower subjective levels of alertness, anxiety, confidence and energy; and higher subjective levels of sleepiness. When taken with CO2 exposure, mood disturbances did not reveal a combined effect of gas and sleep deprivation. Due to the small sample size, the results of the study are considered preliminary.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2022
- Accession Number
- AD1181613
Entities
People
- Christina Kunkle
- Frank C Golich
- Henry G. Stephenson
- J. L. Caldwell
- Jarrett Hobby
- Kayelin Tiggs
- Megan I Boltz
- Nicole L Beasley
Organizations
- Naval Medical Research Unit Dayton