EXPERIMENTS CONCERNING THE TRANSFER OFA LEARNED RESPONSE AND ACTIVITY LEVEL BY BRAIN HOMOGENATES

L agerspetz , K. M. J., R aitis , P., T irri , R. & L agerspetz , K. Y. H. Experiments concerning the transfer of a learned response and activity level by brain homogenates. Scand.J. Psychol ., 1968, 9, 225–229,— The learning of a conditioned avoidance response caused an increase in the open-field activity of male albino mice. Pseudo-conditioning had an opposite effect. The transfer of brain homogenate from the trained animals did not facilitate the acquisition of the avoidance response by the recipient animals. Differences in the open-field activity were not transmitted with the brain homogenates. However, the constancy of the open-field activity scores was decreased by the homogenate injection, and also by severe electric shocks.