| Abstract: | A "preparatory" hypothesis according to which the bar-holding develops as a preparatory response placing an animal in an advantageous position for the reaction on the subsequent action of the electric current has been experimentally examined. Comparing the avoidance training under the condition allowing the bar-holding until the next conditioned and unconditioned stimuli, and under conditions excepting such long holding it has been established that in first case the number of bar-holding responses is more and the avoidance responses are less than in the second one. It contradicts the "preparatory" hypothesis. It has been shown that the dynamics of inter-trail and the bar-holding responses results from stimulus generalization and discrimination. |
