No matter how hard I focus - I can only see it going counter clockwise. Must be a left-brain kinda girl.
Ok - too wierd. A few minutes ago, no matter how hard I tried to see her going clockwise ... I couldn't do it. I laid my haed down for a second & while my head was still laying on the desk, I glanced up at the screen and she was moving clockwise. Now I can't see her going counter-clockwise anymore.
Notice this too. When she is going clockwise, it looks like her left foot is down and when she is going counter clockwise, it looks like her right foot is down. My brother showed me this Saturday. He usually sees it going counter clockwise and I usually see it going clockwise. We would watch her and say out loud when she was facing us or not facing us. Really weird to have two people watching the same thing, at the same time, and one is saying "facing" while the other is saying "not facing".
The spinning girl is a form of the more general spinning silhouette illusion. The image is not objectively “spinning” in one direction or the other. It is a two-dimensional image that is simply shifting back and forth. But our brains did not evolve to interpret two-dimensional representations of the world but the actual three-dimensional world. So our visual processing assumes we are looking at a 3-D image and is uses clues to interpret it as such. Or, without adequate clues it may just arbitrarily decide a best fit - spinning clockwise or counterclockwise. And once this fit is chosen, the illusion is complete - we see a 3-D spinning image. http://www.theness.com/neurologicablog/index.php?p=27
Clockwise only here...I'm a righty too. I've checked it a few times this morning and still only see CW... at least I'm constant...