移動してないけど人の脳は矢印に逆らえないのデース pic.twitter.com/wCx22ZhO2I
— じゃがりきん (@jagarikin) November 4, 2021
Japanese digital artist @jagarikin serves up the trippiest optical illusions on a regular basis. If you look closely at the circles above, you'll see that the black and white patterns move consistantly, and the circles themselves never move. But your eyes, or rather your brain, makes the circles go in the direction the arrow is pointing. Let's see that same illusion in a more colorful format.
なんと動いてません#ド直球に言いますがフォローしてください pic.twitter.com/qthgo7k2UN
— じゃがりきん (@jagarikin) April 21, 2021
Are the circles moving? Yes, the colors in them are going around and around. But the circles themselves aren't traveling relative to the background, that's just your brain at work once again. We've certainly embraced the symbolic meaning of an arrow, haven't we? But wait, what if that's not it at all?
The incredible thing with this is that if you look at the image from an angle at a bit of a distance, there is no "movement", the movement only happens when you look at it straight on.
— Jeremy Fisk #FBPE (@FiskJeremy) November 14, 2021
Well, hooda thunket, the arrows have nothing to do with it. So what makes these circles appear to move? ScienceAlert clues us in. If you look closely, you'll see a very thin border on the outside and inside of each circle. It's this border that changes in contrast with the background and the rest of the circle, and therefore changes your perception. The border movement is not consistant, but is coordinated with the appearance of the arrows. Whoa! They go on to explain how this trick works on our brains. Still, understanding it doesn't make the effect go away. -via Damn Interesting