I just did this right brain/left brain test and am so weirded out. It’s a test to see which hemisphere of the brain you use more. Initially I saw the image of the dancer going clockwise, the right brain way of seeing it. And I watched it and watched it and couldn’t see it the left brain way until I decided to focus on her shadow, and when I looked back up she was spinning counter clockwise. Then I couldn’t see her going any direction but counter clockwise. I thought for a while maybe this was timed and messing with me maybe? So I focused on her shadow again and when I looked back up at her she was going clockwise again. Then I didn’t even have to focus on the shadow but could focus a little while watching her spin and she’d switch directions right before my eyes. I am probably freaked out by this more than I should be. Our brains and eyes and their relationship is so odd, though, isn’t it?
Tell me if I’m flipping out or if this happens to you too.