of human retinas to be about 8,960 kilobits per second, whereas guinea pig retinas transfer at about 875 kilobits.

In 2007 Zaidi and co-researchers on both sides of the Atlantic studying patients without rods and cones, discovered that the novel photoreceptive ganglion cell in humans also has a role in conscious and unconscious visual perception. The peak spectral sensitivity was 481 nm. This shows that there are two