Tongue Cooling during Drinking: A Regulator of Water Intake in Rats

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Science  12 May 1972:
Vol. 176, Issue 4035, pp. 685-686
DOI: 10.1126/science.176.4035.685


Rats that had been deprived of water for 23½ hours were presented with water for 30 minutes per day. As the temperature of the water was increased from 12°to 36°C (body temperature), the total water intake for 30 minutes increased 71 percent. Tongue cooling during drinking appears to suppress drinking in anticipation of extracellular hydration.