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Cold exposure and heat reinforced operant behavior.

P L CARLTON, R A MARKS

    Science (New York, N.Y.)
    |November 28, 1958
    PubMed
    Summary
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    Rats housed in a cold environment (2 degrees C) increased their self-administered heat intake. This suggests cold exposure alters thermoregulatory behavior in rodents.

    Area of Science:

    • Physiology
    • Animal Behavior
    • Environmental Science

    Background:

    • Thermoregulation is a critical physiological process for maintaining internal body temperature.
    • Environmental factors, such as ambient temperature, significantly influence thermoregulatory strategies.

    Purpose of the Study:

    • To investigate the impact of chronic cold exposure on thermoregulatory behavior in rats.
    • To quantify self-administered heat-seeking behavior in response to a cold environment.

    Main Methods:

    • Rats were trained to operate a lever for heat.
    • Experimental group lived in a 2 degrees C environment; control group lived at room temperature.
    • Heat presentations were recorded as a measure of self-administered heat-seeking behavior.
    Keywords:
    LEARNINGTEMPERATURE/effects

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    Main Results:

    • Rats housed at 2 degrees C exhibited a higher frequency of lever presses for heat.
    • Chronic cold exposure led to increased self-initiation of heat in rats.

    Conclusions:

    • Living in a cold environment (2 degrees C) stimulates increased self-directed thermoregulatory behavior in rats.
    • Cold-induced changes in behavior are a key component of rodent thermoregulation.