After image is an optical illusion that appeared in our vision after exposure to an image. After image comes in two form, positive (original colors) and negative (inverted colors). There is not much optical illusion after we saw the positive after image as it is the image we usually see. In contrast, negative after image brings a huge impact to our eyes and triggers the retinal phenomenon. As over stimulation in negative after image null our eyes photo receptors. Thus, we can see an obvious blue green colors optical illusion remain in our vision in few seconds especially when look into a blank space. The below is the sample of after image, just stare at the inverted photo of Beyonce in one minute then look at the blank space over right side.
It's very mystical! Why our eyes will produced a opposite color of this inverted image? After we look at sharp green image then our eyes produce a complimentary color illusion which is red and vice versa.
However, can we apply this negative after image in design? Perhaps in black and white logo and it's principle of using high contrast colors to stimulate our vision. I think it's good for designer to explore the nature of retinal phenomenon and apply in their design.
Reference:
Vurdlak. (2012). Beyonce After image illusion. Retrieved August 29, 2012, from http://www.moillusions.com/2012/01/beyonce-afterimage-illusion.html
Wikipedia (n.d.). After Image. Retrieved August 29, 2012, from
http://en.wikipedia.org/wiki/Afterimage
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