Journal of Applied Physiology
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J Appl Physiol 59: 1823-1827, 1985;
8750-7587/85 $5.00
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Journal of Applied Physiology, Vol 59, Issue 6 1823-1827, Copyright © 1985 by American Physiological Society

ARTICLES

Effects of raised body temperature on reasoning, memory, and mood

R. L. Holland, J. A. Sayers, W. R. Keatinge, H. M. Davis and R. Peswani

Volunteers' body core temperatures were raised to 38.80-39.05 degrees C within a few minutes by immersion in water at 41 degrees C. Tests were then made with the subjects insulated and cooling slowly. Control immersions were made in water at 37 degrees C when core temperatures remained at 36.60-37.40 degrees C. Neither memory registration nor recall of memories registered an hour earlier, nor immediate ability to recall digit spans forward or backward was affected by the increase in core temperature. The increase in temperature did not have any significant effect on accuracy of performance of verbal logic problems or of two-digit subtractions. However, the increase in core temperature was associated with a significant increase in the speed of performance of the tests, by 11 and 10%, respectively. The warm immersions also induced a significant decrease in alertness and an increase in irritability as assessed subjectively by the volunteers; control immersions had no such effects.


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K. P. Wright Jr., J. T. Hull, and C. A. Czeisler
Relationship between alertness, performance, and body temperature in humans
Am J Physiol Regulatory Integrative Comp Physiol, December 1, 2002; 283(6): R1370 - R1377.
[Abstract] [Full Text] [PDF]


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