Here’s a link to some great demonstrations from Stuart Anstis at UCSD. You can also find audio from all of the lectures of his Psych 102 class on Sensation and Perception here. The link here is to the latest edition (Winter 2014 semester), which I haven’t listened to, but I listened to an older version of the entire course a few years ago and it was really excellent (though some visual demonstrations aren’t well-suited to an audio podcast).
My students usually enjoy the Negative World and Makeup shading examples you can find on his site below (the makeup pdf can be found by clicking the image of Cameron Diaz)
