Most people would guess their system had been infected by some nasty new computer virus. Or their video card had given up the ghost. In no case would they think this was normal everyday computer behaviour and just ignore it.
But when our own computer system, in other words, our brain, goes into a similiar tail spin, we completely ignore the illusion and go on as if nothing has happened?
Most of us know this experience as a child. We spin around a few times, eyes closed, then drop to the grass. When we open our eyes and look up at the sky and trees, they are no longer rooted to the spot, the way we have always known them to be. They are now flying around us in a stomach lurching blur. The whole universe is spinning madly out of control – trees, building, clouds, everything.
We know this is wrong. Inaccurate. A gross delusion of some kind. So then why don’t we have ourselves checked in? Why do we just accept this new view of the universe so casually?
Researchers tell us we are born with a very powerful 'baloney generator' built right into our brain. It essentially runs 24/7. Rationalizes our odd behaviour. Makes excuses to protect our fragile egos. And fills in the blanks when information is missing. And that leads us to the reasons why optical illusions are so interesting and can be used by artists to make a statement.
The painting shown here, Hulk In The Fog #1 is an example of what I think is a fairly effective optical illusion. Because our visual cortex is used to processing blur, dust and smoke as a distance effect, whenever we see these visual clues we assume they are representative of the background. Using a simple splatter effect on most of the monster pushes him back into the distance. But notice the arm and hand, clearly outlined, seems to push into the foreground with much more emphasis than one would expect based on the information we have.
Our brain doesn't see the splatter as dots on the page. Instead an optical illusion of distance is created.
Painting shown is Hulk In The Fog #1 by Russ Smith, 24" x 36" January 2009, after Tim Sale's drawing of the Grey Hulk. To enlarge the image, please click on the painting.