Anything resulting in less green, is interpreted as its paired primary color, which is magenta, i.e. an equal mixture of red and blue.Example video which produces a distorted illusion after one watches it and looks away. See motion aftereffect. Positive afterimages
Positive afterimages, by contrast, appear the same color as the original image. They are often very brief, lasting less than half a second. The cause of positive afterimages is not well known, but possibly reflects persisting activity in the brain when the retinal photoreceptor cells continue to send neural impulses to the occipital lobe.A stimulus which elicits a positive image will usually trigger a negative afterimage quickly via the adaptation process. To experience this phenomenon, one can look at a bright source of light and then look away to a dark area, such as by closing the eyes. At first one should see a fading positive afterimage, likely followed by a negative afterimage that may last for much longer. It is also possible to see afterimages of random objects that are not bright, only these last for a split second and go unnoticed by most people. On empty shape
An afterimage in general is an optical illusion that refers to an image continuing to appear after exposure to the original image has ceased. Prolonged viewing of the colored patch induces an afterimage of the complementary color (for example, yellow color induces a bluish afterimage).
Gallery
See also
Book of Optics
Emmerts law
Lilac chaser
McCollough effect
Motion aftereffect
Neural adaptation
Palinopsia
Persistence of vision
Screen burn-in
Spectropia
Visual perception

Notes
External links

The Palinopsia Foundation is dedicated to increasing awareness of palinopsia, to funding research into the causes, prevention and treatments for palinopsia, and to advocating for the needs of individuals with palinopsia and their families. Eye On Vision Foundation raises money and awareness for persistent visual conditions
Afterimages, a small demonstration. afterimage examples
The Color Dove Illusion