The features of the influence of "reward areas" on the electrical activity of the parafascicular complex of nuclei in the developing rabbit.

The influence of the electrostimulation of "reward areas", preliminarily identified by the self-stimulation technique, on the evoked potentials recorded in the parafascicular complex of the thalamus in response to peripheral nociceptive stimulation was studied in 35 rabbits, of 41-60 days of life. When comparison was made of the data obtained with the results of studies carried out previously in adult animals and in rabbits from the 30th-40th days, in addition to common characteristics, features of these influences which were characteristics only for the age interval under investigation were distinguished. The antinociceptive influences of the "reward areas" on the evoked potentials in the parafascicular complex were less pronounced with respect to a number of parameters in the period of the rabbits life occupying the intermediate position between the over-excitable and adult periods of development.