Intracranial self-stimulation in mice using a modified hole-board task: Effects of d-amphetamine

Abstract
Mice implanted with stimulating electrodes in the lateral hypothalamus demonstrated reliable selfstimulation rates when given the opportunity to break a photobeam in a modified hole-board task. Selfstimulation rates were enhanced by low dosages of d-amphetamine but were depressed by high dosages. The dose-dependent effects of amphetamine could not be accounted for by changes in exploratory hole-board activity and were discussed in terms of an interaction between the rewarding properties of electrical brain stimulation and the reinforcing properties of amphetamine administration.