[The effect of the inhibition of free-radical oxidation processes in early postnatal ontogeny on learning in adult rats].

The effect on neonatal administration of synthetic antioxidant mexidol on avoidance conditioning was studied in 2-month old rats. The inhibition of the free-radical oxidation in the tissues of 3-7-day old rats considerably facilitated subsequent process of learning: the avoidance response latency was reduced by 4-6 times, the conditioned response was two-fold augmented, and total motor activity was reduced at the stage of a stable response.