Choice of intracranial stimulation as a function of delay between stimulations and strength of competing drive

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4 male albino rats were trained to run in a T maze with water as reward on one side and electrical brain stimulation on the other. Degree of thirst and delay since the last brain stimulus were varied. Probability of choice of brain stimulation over water decreased with delay since the last brain stimulus, this decrease occurring with greater rapidity the greater the degree of competing thirst. This confirms the prediction from Deutsch's (1960) theory. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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