[The neurochemical cellular mechanisms for assessing the results of behavioral activity]

Chemical sensitivity of cortical neurons to acetylcholine, noradrenaline, cycloheximide, lys-vasopressin, atropine, and propranolol was studied in cats at different stages of automatized instrumental food-procuring reactions and the same reactions without a reinforcement. A technique was used consisting in micro-ionophoretic application of substances to neurons of the visual cortex in freely behaving animals. Some neurons were found to have a different chemical sensitivity to biologically active substances in the two behavioural experimental situations and significance of protein synthesis mechanisms for these processes.