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Stimulus generalization of schedule-induced polydipsia.

R J Hamm, J H Porter, G L Kaempf

Journal of the Experimental Analysis of Behavior

|July 1, 1981

Summary

Schedule-induced polydipsia in rats can be controlled by auditory stimuli. Researchers found that rats learned to associate different tone frequencies with food availability, demonstrating stimulus control.

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Area of Science:

Behavioral neuroscience
Animal behavior

Background:

Schedule-induced polydipsia is a model for studying excessive drinking.
Intermittent reinforcement schedules can establish complex behavioral patterns.

Purpose of the Study:

To investigate stimulus control over schedule-induced polydipsia.
To determine if auditory stimuli can regulate excessive drinking behavior.

Main Methods:

Rats were exposed to an intradimensional discrimination task.
A multiple random-time 30-sec extinction schedule of food presentation was used.
Stimulus generalization testing with varying tone frequencies was conducted.

Main Results:

Stable differential licking rates were established during auditory stimuli.
All rats showed moderately sloping symmetrical generalization gradients.
Auditory stimuli were found to exert control over polydipsia.

Conclusions:

Schedule-induced polydipsia can be modulated by external stimuli.
This suggests that environmental cues play a role in regulating excessive drinking behavior.
Findings contribute to understanding the behavioral mechanisms of polydipsia.

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