Plastic changes in the intact cerebral cortex as a result of local injury to a symmetrical division of it.

The representation of the radial nerve in a symmetrical division of the opposite cerebral hemisphere was studied using an evoked potentials technique at various periods (from 1.5 months to 1 year 8 months) following the electrolytic destruction of the associative parietal cortex in chronic experimental conditions in cats. An expansion of the zone of the representation of the radial nerve was identified, starting from three to four months following the operative intervention. The activity of lactate dehydrogenase and malate dehydrogenase, as well as the spectrum of lactate dehydrogenase isoenzymes in the indicated time periods. The possible factors underlying the changes observed are discussed.