Reinforcing Brain Stimulation in Competition with Water Reward and Shock Avoidance

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Science  28 Sep 1962:
Vol. 137, Issue 3535, pp. 1052-1054
DOI: 10.1126/science.137.3535.1052


Employing response rate as the index of reinforcing strength in self-stimulation experiments is questioned. With water reward or shock avoidance placed in competition with brain stimulation, self-stimulation rate does not reflect relative reinforcement value. The results agree with preference tests which show that, for a given electrode site, stimulus intensity, not rate, is directly related to reward strength.