[Formation of conditioned reflex systems to time in lower simians]

The object of the study was the formation of systems of conditioned food-procuring reflexes to time intervals of different duration (from 1,5 to 4 min) integrated into a stereotype in monkeys (macaques and baboons). It has been shown that unlike rabbits, monkeys more readily form such systems and reproduce them more distinctly. The greater capacity of monkeys for complicate forms of orientation in time as compared with rabbits is more manifest in the elaboration of complex systems (five-interval in the present experiments) of conditioned reflexes to time.