Abstract
Rats were deprived of water for 24 h and given 8 ml of water, .9% saline, 1.8% saline, or 4 ml of water via stomach-tubing or via normal drinking. Immediately following administration of liquid, subjects were given either food or water for 30 min. The results showed that: (a) orally ingested liquids were more effective than stomach-tubed liquids in inhibiting drinking and in potentiating feeding; (b) a higher concentrated NaCl solution was less effective in inhibiting water intake and potentiating food intake; (c) a greater amount of water was more inhibitory to subsequent water intake but more potentiating to food intake within the range tested. Thus the ingestional, amount, and osmolality variables related to liquid intake reciprocally influenced feeding and drinking.
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Hsiao, S., Smutz, E.R. Thirst-reducing and hunger-inducing effects of water and saline by stomach-tubing vs. drinking in rats. Psychobiology 4, 111–113 (1976). https://doi.org/10.3758/BF03326559
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DOI: https://doi.org/10.3758/BF03326559