If you’re a fan of optical illusions and perceptual tricks, check out this AsapSCIENCE video. As usual, producers Michael Moffitt and Gregory Brown do a great job distilling the essential ideas and presenting them in a fun, entertaining and informative way. Here, they show you how your brain judges brightness and color in context. Visit their YouTube channel to see more (including a frequency test for your ears).
You can also check out our compilation of the 169 best illusions (ia sampling of them is on our site) as well as our Illusions Chasers blog, by Susana Martinez-Conde and Steven Macknik, which explore illusions each week.