Helen (heleninwales) wrote,

Fascinating neurological illusion

Found via matociquala...

Which way is the dancer turning?

Well, whichever way you thought she was going, you're only half right.

See here for an explanation...

I stared at her for a while and couldn't for the life of me see how she could go any way other then clockwise. I then called G up to look at it. "Oh, she's going clockwise," he said. "No, just a minute -- anti-clockwise." After staring for a few seconds he said, "She goes whichever way I want. It's easy to change."

Eventually, she flipped directions, but the moment I stopped concentrating, she went back to clockwise again. With practice I might be able to get the anti-clockwise rotation more reliably, but it seems to mean that, as I've always suspected, I am very right-brained.
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