[Acetylcholinesterase activity in visual cortex structures during early visual deprivation].

By means of quantitative histochemical methods it has been shown that an early photic deprivation (animals kept in a dark chamber for two months after their birth) leads to a decrease in the activity level of acetylcholinesterase (AChE) in the visual area of the cerebral cortex. With the recovery of the visual function (animals kept in normal photic conditions for two weeks) the AChE activity becomes markedly normalized. The obtained data allow to suggest that the decrease in AChE activity due to deprivation is functionally determined.