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The human body has a sophisticated thermoregulation system that employs negative feedback mechanisms to maintain an optimal core temperature. When the core temperature drops, peripheral and central thermoreceptors send signals to the hypothalamus, activating the heat-promoting center. This center triggers several responses aimed at increasing the core temperature. First, vasoconstriction reduces the flow of warm blood from internal organs to the skin so that the heat is not lost from the skin,...
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Measuring Skeletal Muscle Thermogenesis in Mice and Rats
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Yawning and thermoregulation.

Andrew C Gallup1, Gordon G Gallup

  • 1Department of Biological Sciences, Binghamton University, State University of New York, Binghamton, New York, 13902, United States. a.c.gallup@gmail.com

Physiology & Behavior
|June 14, 2008
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Summary
This summary is machine-generated.

Yawning may be a physiological cooling mechanism. Atypical yawning can indicate thermoregulatory dysfunction in various neurological and psychiatric conditions, suggesting a link between body temperature and brain health.

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Area of Science:

  • Physiology
  • Neuroscience
  • Thermoregulation

Background:

  • Yawning is a complex physiological response.
  • Its precise function remains debated, with thermoregulation emerging as a leading hypothesis.
  • Abnormal yawning patterns are observed in several neurological and psychiatric disorders.

Purpose of the Study:

  • To review evidence supporting yawning as a thermoregulatory mechanism.
  • To explore the link between yawning, body temperature, and neurological conditions.
  • To highlight the diagnostic and therapeutic implications of this connection.

Main Methods:

  • Literature review of medical and physiological studies.
  • Analysis of evidence linking yawning to thermoregulatory dysfunction.
  • Correlation of yawning with conditions affecting brain and core temperature.

Main Results:

  • Growing evidence suggests yawning serves a thermoregulatory function, aiding in compensatory cooling.
  • Conditions like multiple sclerosis, migraine, epilepsy, stress, anxiety, and schizophrenia are associated with impaired thermoregulation and atypical yawning.
  • Excessive yawning correlates with increased brain/core temperature, seen in CNS damage, sleep deprivation, and SSRI use.
  • Drowsiness and sleepiness ratings correlate with elevated body temperature, further supporting the thermoregulation hypothesis.

Conclusions:

  • Yawning is proposed as a crucial physiological mechanism for regulating body temperature.
  • Atypical yawning can serve as a biomarker for thermoregulatory dysfunction in various diseases.
  • Understanding this link can improve diagnosis and treatment of temperature-related disorders.