Abstract
This chapter is concerned with a learned response in which the cat pushes a plate to terminate the stimulation applied. The chapter presents an experimental box designed for escape learning has been used throughout the present studies. This box has two small windows in a wall. In front of one window is a plate, pushing of which breaks the stimulation circuit. The animal placed in the box can be trained to push the plate to turn off the stimulation delivered to that animal. This type of response is designated as the switch-off behavior (SOB) in the present experiment. The term “hypothalamic SOB” can be applied to the SOB induced by hypothalamic stimulation. Hess demonstrated in cats that flight reactions develop during hypothalamic stimulation. This result suggests that the SOB may occur when a flight response is produced by hypothalamic stimulation. The animal with a hypothalamic electrode that could give rise to a flight response was placed in the experimental box, and the hypothalamus was stimulated monopolarly. The response was considered to be positive if an animal maintained a highly stable value of the response time during several hundred trials.
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