Cognitive Performance during a 24-Hour Cold Exposure Survival Simulation.

Area of Science:

• Environmental Physiology
• Human Performance in Extreme Environments

Background:

• Ship grounding in polar regions necessitates prolonged survival periods before rescue.
• Understanding cognitive function during extended cold exposure is critical for survival.

Purpose of the Study:

• To investigate the effects of prolonged cold exposure on cognitive performance.
• To assess cognitive test battery (CTB) performance during 24 hours of cold exposure.

Main Methods:

• Eight participants with occupational cold exposure underwent 24-hour cold exposure (7.5°C).
• Core temperature (Tc) and CTB performance were monitored.
• Participants engaged in self-perceived tolerable minimal exercise.

Main Results:

• Core temperature significantly decreased, and circadian variations were eliminated.
• Cognitive test battery performance showed minimal changes despite prolonged cold exposure.
• Mild physical activity maintained thermal comfort and metabolic heat production.

Conclusions:

• Cognitive performance is resilient to prolonged cold exposure.
• Encouraging mild physical activity for survivors can enhance metabolic heat production, motivation, and serve as a distraction.
• Recommendations for survival equipment and future research should consider cognitive performance maintenance.