[GABA-transaminase activity in the dog brain visual analyzer following light deprivation during ontogenesis].

The GABA-transaminase activity is the highest in the subcortical formations of the brain visual analyzer in 45- and 90-day dogs. Deprivation of visual impulses at early stages of postnatal ontogenesis lowers sharply this activity in all the studied areas of the brain visual analyzer. Under conditions of deprivation the content of glutaminic acid increases in all the formations of the dog brain visual analyzer to a considerably less extent, especially in the anterior corpora bigemina and lateral geniculate body at the age of 45- and 90-days. Similar regularities are found in the deprivation effect relative to formation of ascorbic acid the content of which lowers sharply in all the formations of the dog brain visual analyzer on the 90th day of light deprivation.