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Related Experiment Videos

Repeated exposure to moderate cold impairs matching-to-sample performance.

J R Thomas1, S T Ahlers, J F House

  • 1Environmental Medicine Department, Naval Medical Research Institute, Bethesda, MD.

Aviation, Space, and Environmental Medicine
|November 1, 1989
PubMed
Summary

Even moderate cold exposure (5°C) impairs complex cognitive performance, specifically on conditional discrimination tasks. Repeated exposures did not reduce the negative impact on accuracy and response times.

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Area of Science:

  • Cognitive Psychology
  • Environmental Physiology
  • Human Performance

Background:

  • Understanding the impact of environmental stressors on cognitive function is crucial for safety and performance.
  • Moderate cold exposure, even without inducing hypothermia, may affect complex cognitive tasks.

Purpose of the Study:

  • To investigate the effects of moderate cold (5°C) on complex cognitive performance.
  • To determine if repeated cold exposures attenuate performance decrements.

Main Methods:

  • Subjects performed a conditional discrimination task involving matching matrices under cold (5°C) and ambient conditions.
  • Performance was assessed across three repeated weekly sessions comparing cold and ambient temperatures.

Main Results:

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  • Response accuracy was consistently impaired during cold exposure sessions.
  • Choice response latencies increased, while sample response latencies decreased in the cold.
  • The magnitude of performance impairment was not reduced by repeated cold exposures.

Conclusions:

  • Moderate cold exposure significantly impairs complex cognitive performance on a conditional discrimination task.
  • Even brief, repeated exposures to moderate cold do not lead to adaptation or reduced performance deficits.