Dissociation of arousal and regulatory behaviors induced by hypertonic and hypovolemic thirst.

1 January 1971

journal article
Published by American Psychological Association (APA) in Journal of Comparative and Physiological Psychology

Vol. 76 (2) , 305-310
https://doi.org/10.1037/h0031389

Abstract

Examined the hypothesis that arousal and regulatory behaviors are controlled by different mechanisms. The effects of intravascular hypertonicity and hypovolemia on spontaneous wheel running and water ingestion were studied in 67 male sprague-dawley rats. Hypovolemia and combined hypertonicity and hypovolemia increased water ingestion without a corresponding increase in activity. Neither osmotic nor hypovolemic thirst augmented the increase in wheel running produced by water deprivation during the nocturnal portion of the day-night cycle. Results support the view that arousal and regulatory behaviors are controlled by separate mechanisms, not by a single system as implied by drive and central motive state theories. (22 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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