[Patterns in the ontogenetic development of certain forms of higher nervous activity in rhesus macaques]

Studies have been made on ontogenetic development of simple and complex behavioural forms, realization of certain sequence of motor feeding conditioned reflexes, visual differentiation of signals, short-term memory and probability prediction in rhesus monkeys. Evolutionary features of ontogenetic development of some of the forms of the higher nervous activity were revealed. Both similarities and differences were noted in animals from three age groups. In ontogenesis of lower monkeys, the development of the main nervous processes of the higher nervous activity (learning, memory, etc.) takes place gradually depending on the age of a baby and the level of integrative activity of the brain.