Six right-handed male subjects performed a central and peripheral visual choice-reaction time (RT) task. After two initial practice periods, subjects performed counterbalanced manipulations of control, placebo, and heat conditions. In the heat condition, a helmet selectively raised cortical temperature, measured in the external auditory meatus, by 7°F while the placebo condition utilized the helmet with no external heat applied. Analysis indicated that the elevation of cortical temperature caused an increase in RT and decreased rate of errors. This conservatism in subjects' response under induced cortical hyperthermia is contrasted with previous accounts of visual RT performance under manipulations of whole-body heat stress.
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References
1.
AllnuttM. F., & AllanJ. R.The effects of core temperature elevation and thermal sensation on performance. Ergonomics, 1973, 16, 189–196.
2.
BenorD., & ShvartzE.Effect of body cooling on vigilance in hot environments. Aerospace Medicine, 1971, 42, 727–730.
3.
BenzingerT. H.Heat regulation: Homeostasis of central temperature in man. Physiological Reviews, 1969, 49, 671–759.
4.
BlagdenC.Experiments and observations in an heated room. Philosophical Transactions, 1775, 65, 111–123. (a)
5.
BlagdenC.Further experiments and observations in an heated room. Philosophical Transactions, 1775, 65, 484–494. (b)
6.
BursillA. E.The restriction of peripheral vision during exposure to hot and humid conditions. Quarterly Journal of Experimental Psychology, 1958, 10, 113–129.
7.
CooperK. E.CranstonW. I., & SnellE. S.Temperature in the external auditory meatus as an index of central temperature changes. Journal of Applied Physiology, 1964, 19, 1032–1035.
8.
FraserD. C., & JacksonK. F.Effect of heat stress on serial reaction time in man. Nature, 1955, 176, 976–977.
9.
GretherW. F.HarrisC. S.MohrG. C.NixonC. W.OhlbaumM.SommerH. C.ThalerV. H., & VeghteJ. H.Effects of combined heat, noise and vibration stress on human performance and physiological functions. Aerospace Medicine, 1971, 42, 1092–1097.
10.
HancockP. A., & DirkinG. R.Selective cortical hyperthermia and central and peripheral visual choice reaction time. Paper presented at the Annual Conference of the North American Society for the Psychology of Sport and Physical Activity, Monterey, California, June, 1981.
11.
Hippocrates. The genuine works of Hippocrates: Translation from Creek with preliminary discourse and annotations. (Francis Adams) Baltimore: Williams & Wilkins, 1939.
12.
HoltW. R., & BrainardE. C.Selective hyperthermia and reaction time. Perceptual and Motor Skills, 1976, 43, 375–382.
13.
HoughtenF. C., & YagloglouC. P.Determining lines of equal comfort. Transactions of the American Society of Heating and Ventilating Engineers, 1923, 29, 163–176.
14.
KleitmanN.Studies on the physiology of sleep: VIII. Diurnal variation in performance. American Journal of Physiology, 1933, 104, 449–456.
15.
KleitmanN.TitelbaumS., & FeivesonP.The effect of body temperature on reaction time. American Journal of Physiology, 1938, 121, 495–501.
16.
LeibowitzH. W.AbernethyC. N.BuskirkE. R.Bar-OrO., & HennessyR. T.The effect of heat stress on reaction time to centrally and peripherally presented stimuli. Human Factors, 1972, 14, 155–160.
17.
LindA. R.A physiological criterion for setting thermal environmental limits for everyday work. Journal of Applied Physiology, 1963, 18, 51–56.
18.
LovingoodB. W.BlythC. S.PeacockW. H., & LindsayR. B.Effects of d-amphetamine sulfate, caffeine, and high temperature on human performance. Research Quarterly, 1967, 38, 64–71.
19.
NadelE. R., & HorvathS. M.Comparison of tympanic membrane and deep body temperatures in man. Life Sciences, 1970, 9, 869–875.
PeplerR. D.Warmth and lack of sleep: Accuracy or activity reduced. Journal of Comparative and Physiological Psychology, 1959, 52, 446–450.
22.
ProvinsK. A., & BellC. R.Effects of heat stress on the performance of two tasks running concurrently. Journal of Experimental Psychology, 1970, 85, 40–44.
23.
RamseyJ. D.DayalD., & GhahramaniB.Heat stress limits for the sedentary worker. American Industrial Hygiene Association Journal, 1975, 36, 259–265.
24.
ReillyR. E., & ParkerJ. F.Effect of heat stress and prolonged activity on perceptual-motor performance. (NASA CR-1153)Arlington, VA: Biotechnology, Inc., 1967.
25.
SanctoriusS.Ars de statica medicine, aphorismorum sectionibus septum comprehensa. Venice, 1614.
26.
WilkinsonR. T.FoxR. H.GoldsmithR.HamptonI. F. G., & LewisH. E.Psychological and physiological responses to raised body temperature. Journal of Applied Physiology, 1964, 19, 287–291.
