Abstract
Rats with bilateral ventromedial lesions of the hypothalamus were tested on a VI 1-min reinforcement schedule at 5%, 10%, 15%, and 20% weight loss, first at nonobese then at obese weight levels. During both test phases, rats with lesions of the ventromedial nucleus (VMN) did not differ significantly from the control Ss in response rates, which increased as a linear function of percentage weight loss. However, the VMN Ss’ response rates decreased significantly from the nonobese to the obese test phase.
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BROBECK, J. R. Food intake as a mechanism of temperature regulation. Yale Journal of Biology & Medicine, 1948, 20, 545.
COLLIER, G. Body weight loss as a measure of motivation of hunger and thirst. Annals of the New York Academy of Sciences, 1969, 157, 594–609.
FALK, J. L. Comments on Dr. Teitelbaum’s paper. In M. R. Jones (Ed.), Nebraska symposium on motivation. Lincoln: University of Nebraska Press, 1961.
FLESHLER, M., & HOFFMAN, H. S. A progression for generating variable interval schedules. Journal of the Experimental Analysis of Behavior, 1962, 5, 529–530.
HAMILTON, C. L. Interactions of food intake and temperature regulation in the rat. Journal of Comparative & Physiological Psychology, 1963, 56, 476–488.
HAN, P. W., & BROBECK, J. R. Temperature regulation of rats with hypothalamic hyperphagia. American Journal of Physiology, 1961, 200, 703–706.
KENNEDY, G. C. The role of depot fat in the hypothalamic control of food intake in the rat. Proceedings of the Royal Society, B, 1953, 140, 578–592.
MARKS, H. E., & REMLEY, N. R. The effects of type of lesion and percentage body weight loss on measures of motivated behavior in rats with hypothalamic lesions. Behavioral Biology, 1972, 7, 95–111.
MAYER, J. Glucostatic mechanism of regulation of food intake. New England Medical Journal, 1953, 249, 13–16.
MILLER, N. E., BAILEY, C. J., & STEVENSON, J. A. Decreased “hunger” but increased food intake resulting from hypothalmic lesions. Science, 1950, 112, 256–259.
TEITELBAUM, P. Random and food-directed activity in hyperphagic and normal rats. Journal of Comparative & Physiological Psychology, 1957, 50, 486–490.
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This paper was based upon a thesis submitted by the senior author in partial fulfillment of the requirements for the MS degree in psychology at the University of Georgia. The authors would like to thank Dr. Henry E. Marks for his assistance, and Sheryl Edmonds for preparation of histological materials.
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Porter, J.H., Allen, J.D. Food-motivated performance as a function of weight loss in hypothalamic hyperphagic rats. Psychon Sci 28, 285–288 (1972). https://doi.org/10.3758/BF03328742
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DOI: https://doi.org/10.3758/BF03328742