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  • 1
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    Brain calcium - Role in temperature regulation. (1973)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Perfusion of the preoptic-anterior hypothalamus with excess calcium ion in ground squirrels produces a drop in core temperature. The magnitude of the drop is directly dependent on ambient temperature. Respiration, heart rate, and oxygen consumption are also reduced during perfusion of calcium ion. It is concluded that the depression of body temperature during calcium ion perfusion is due to generalized depression of the neurons of the preoptic-anterior hypothalamus.
    Keywords: BIOSCIENCES
    Type: Science; 181; Aug. 17
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Thermoregulatory responses of a hibernator to preoptic and environmental temperatures (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Preoptic and environmental temperature effects on hibernator thermoregulatory responses, noting changes in metabolic rates
    Keywords: BIOSCIENCES
    Type: ; 117-120. (
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Circadian rhythms of visual accommodation responses and physiological correlations. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Use of a recently developed servocontrolled infrared optometer to continuously record the state of monocular focus while subjects viewed a visual target for which the stimulus to focus was systematically varied. Calculated parameters form recorded data - e.g., speeds of accommodation to approaching and receding targets, magnitude of accommodation to step changes in target distance, and amplitude and phase lag of response to sinusoidally varying stimuli were submitted to periodicity analyses. Ear canal temperature (ECT) and heart rate (HR) rhythms were also recorded for physiological correlation with accommodation rhythms. HR demonstrated a 24-hr rhythm, but ECT data did not.
    Keywords: BIOSCIENCES
    Type: Aerospace Medical Association, Annual Scientific Meeting; May 08, 1972 - May 11, 1972; Bal Harbour, FL
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Effect of bedrest on thermoregulation. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Attempt to determine what changes occur in the thermoregulatory control system during the simulated weightlessness of prolonged bed rest, as determined by measurement of the onset of sweating in response to an imposed heat load. The threshold for sweating occurred at a lower mean skin temperature and the normal vasodilation response appears to be impaired slightly. It is possible that the result of bed rest is to decrease the circulatory capability of the body (autonomic dysfunction) and the effect on the thermoregulatory system, therefore, is to decrease vasomotor heat loss capability.
    Keywords: BIOSCIENCES
    Type: Aerospace Medical Association, Annual Scientific Meeting; May 08, 1972 - May 11, 1972; Bal Harbour, FL
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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