[The characteristics of the chemical sensitivity of the cerebral cortical neurons in the stages of food-procuring behavior in cats depending on the quality of the reinforcement].

Chemical sensitivity of the neurons of the cat's visual cortex was studied at successive stages of food-procuring behaviour formed as an instrumental act with a reinforcement either by milk or meat powder. Basic neurotransmitters were microiontophoretically applied to single neurons. It was shown that under the influence of acetylcholine and noradrenaline the number of universal neurons at successive stages of behavioural acts decreased while the number of the neurons are active at all the stages increased in the situation with milk reinforcement and decreased under the conditions of meat reinforcement.