[Orbital cortex potentials evoked by electrical stimulation of the vagus nerve in newborn kittens]

It is shown that in early period of kittens' postnatal ontogenesis EPs in the orbital cortex to electrostimulation of the vagal nerve consist in a negative wave with a long latency and a great duration of phases of the response. In the process of postnatal ontogenesis regular changes occur in EP pattern, which are manifested in additional response phases, shortened latencies and duration, and changed amplitudes. A small positive response phase appearing first at the age of 9-10 days, becomes stable after 20 days. EP latency in 20-days old kittens approaches that of adult animals.