7. A Big Heart Is All What We Need!
Keep looking at this image and the heart seems to be getting bigger. This shows how closely the brain and heart is related. Or not.
8. They’re moving. No, they’re not!
Warning: Your brain will be taking this test only to fail.
9. He’s in. He’s out.
This 3D picture by an artist sure questions your tendency to perceive things, doesn’t it?