[Effect of pharmacologic substances on the avoidance reflex in a group experiment on rats].

It has been established that the avoidance reflex is disturbed in rats when performed in the presence of a group of non-learned rats. The degree of the disturbance depends on the number of non-learned animals present and the extent if their emotional excitation. Tranquilizers: diazepam, chlordiazepoxide and benactyzine; neuroleptics: chlorpromazine, trifluoperazine and galoperidol; antidepressants: amitriptilin and imipramine in certain doses, while improving the avoidance reflex in the presence of a group of excited rats, do not affect the disturbance of avoidance in the presence of a group of calm rats. It has been assumed that these drugs prevent the appearance of emotional excitation in learned animals in response to that in the non-learned animals surrounding them.