Abstract
Forty rats, maintained on either ad lib food and water or on 22-h food deprivation, were tested in a photobeam cage under conditions of no specific external stimulation or where tone, light, or the odor of amyl acetate or food were presented. The results indicated that the onset of all stimuli resulted in an increase in activity counts for all groups, but the increment in activity varied for the different stimuli. The greatest increase in activity for the ad lib group was to the light stimulus; for the food-deprived group, it was to the food-odor stimulus.
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Tapp, J.T., Mathewson, D.M., D’Encarnacao, P.S. et al. The effect of the onset of stimuli on reactivity in the rat. Psychon Sci 19, 61–63 (1970). https://doi.org/10.3758/BF03335508
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DOI: https://doi.org/10.3758/BF03335508