A recent study has illuminated the evolutionary journey of color vision in animals, revealing a surprising timeline: animals developed the ability to see colors around 500 million years ago—well ...

One of the earliest discoveries in perceptual psychology was the existence of color afterimages. For example, the square below on the right is clearly white. But if you first stare at the red square ...

The title of this article is a bit misleading: no animals can actually see in complete darkness. Animals with so-called “night vision” take a small amount of light and maximize it through evolutionary ...