[Histochemical studies of the sensitivity of frog retinal cells to stimulus movement and flashes]

The technique of quantitative UV-cytophotometry of RNA was used for comparative study of the sensitivity of frog retina cells to the movement of stimuli and flashings. A corresponding set of stimulators which includes the movement of mounted stimuli and heterogenous flashings of diffuse light showed that a type of cells exists in the interior nuclear layer of the retina which is specifically sensitive to the movement. It is suggested that in the formation of this property a dynamic reciprocal lateral inhibition on the level between bipolar and amacrine cells takes place. Application of heterogenous flashing light allowed also to reveal functional variety of bipolar cells.