This is awesome: "You're about to experience a negative afterimage. I'm going to trick your brain into seeing colour where there is none…"
Always nice to be reminded that you can't trust your senses 😲
Credit: Dr Julie Smith on TikTok https://t.co/xs6k67xR46 pic.twitter.com/guySoOm6nm
— Steve Stewart-Williams (@SteveStuWill) May 29, 2021