Multilayered Pictures - Girl Or An Old Woman? Test For Stress "Rotating Snakes" - Akiyoshi Kitaoka Multilayered Images - Joseph Jastro - Duck Or A Rabbit? Titchener Circles - Ebbinghaus Illusionc Rotating Silhouette In Both Directions The Rotating Circlet Dots In Grid - Hermann's Illusion Optical Illusion Against Stress Misperceptions of Colors - Ted Adelson Feedback Illusion - Swivel Silhouette - Nobuyuki Kayahara
