actualy, there is a 'frame rate' to our vision. as you know we see by light passing to our retina to the rods and cones, which are sensitive to differnt frequencies of light ( color).
but the rods and cones do not run continuosly. but turn on and off rapidly
The rods and cones contain visual pigments. Visual pigments are much like any other pigments in that they absorb light with absorption sensitivities that are wavelength dependent. The visual pigments have a special property, however, in that when a visual pigment absorbs a photon of light it changes molecular shape and at the same time releases energy. The pigment in this changed molecular form absorbs light less well than before and thus is often said to have been bleached. The release of energy by the pigment and the change in shape of the molecule together cause the cell to fire, that is to release an electrical signal. which then travels down the optic nerve to the brain. A bleched receptor , now far less sensitive to light won't release another electrial signal ( unless hit with significatnly intense light, like a blinding light)
The melinin in our eyes ( same chemical that causes skin pigmentation based on the quantity of melinin retaind by a cell, which also determins our eye color, darker the eye color the mroe melinin your eye has) chemicaly reacts in your rods and cones to unbleach them to reset these photo receptor cells in your retina for light sensitivity. the Iris ( the colored part of your eye) acts like a polerizing filter on a camera. To filter light intensity. Again the iris color reflects the ammount of melinin in the eye, and the more melinin the more it blocks light.
( side note, Melinin naturaly is a black color, because it absorbs light ( thus why you see things black))
It's not our brain that divides vision into frames, its the mechanics of our eyes. the very basics of how our vision works which was reversed engineered to create the picture tube decades ago. Even today some of the mechanics and chemical processes arn't fully understood ( its hard to test an operating organic vision system afterall)
