Mandelbaum Effect

The mandelbaum effect is when your brain tricks you into seeing or hearing something that's not really there. Like when you think you hear someone say something, but really it was just a sound that your brain turned into words. Or when you think you see something move, but really it was just your eyes playing tricks on you. This happens because your brain is really good at trying to make sense of the world around you, even if that means filling in gaps or making up things that aren't really there. So, sometimes what you think you're seeing or hearing isn't actually what's really happening.