Archive for the ‘ Art ’ Category

The Spinning Dancer: left brain/right brain optical illusion

The Right Brain vs Left Brain test … do you see the dancer turning clockwise or anti-clockwise?

If clockwise, then you use more of the right side of the brain and vice versa.

http://delicategeniusblog.com/?p=552&cpage=3

I first saw this about a couple two or three years ago.  The ‘spinning dancer’ optical illusion has made its rounds on the internet for a few years.  I would surmise that more of you than not have seen it, pondered it, probably even argued about it.  Most of you probably then forgot about it.  From what I could conclude, it was an unexplained phenomenon.  And believe me when I tell you, I scoured the internet in search of an explanation of the mechanics involved with creating an animation in which a dancer appeared to spin different directions to different people, and different directions to the same person at different times.   I could not stop looking at it, thinking about it, and trying to figure out how it worked.  Clearly, the dancer isn’t moving both directions at once.   Yet different people see it spin in different directions, reverse direction at different times and without appearing to actually change direction.  There was nothing in the animation code that could explain the trick.  I asked the smartest people I knew and read everything I could find on this ‘spinning dancer’.  I read anything I could find remotely pertaining to such visual phenomena .  Nothing or nobody could provide a satisfactory explanation – or even a reasonable hypothesis – of what was really going on . Then one day, while doing and thinking about something entirely unrelated, I had an “ah-a” moment. I am relatively certain that this is how it works…

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