Effect of afferent visual impulses on morphological and biochemical indices of the development of neurons of the optical, motor, and parietal cortex of the brain.

We have demonstrated cytochemically that absence of visual impulsation from the time of birth causes two types of reconstruction in the cerebral structures. The first type is associated with reactions of a biochemical deficiency (in the optic and parietal cortex), the second with reactions of biochemical activation (in the motor cortex). We established that the changed organization of the metabolic processes is reversible provided that specific impulsation is resumed. This reconstruction is most complex for compensatorily activated neurons, and less complex for neurons showing signs of biochemical deficiency.