How do optical illusions work?

Patreon: Instagram: Twitter: Discord: Exploring a number of fascinating optical illusions and looking at the psychological mechanisms behind how they work. Chapters: 0:00 - Introduction 0:54 - Vertical-Horizontal Illusion 1:52 - Müller-Lyer Illusion and Sander’s Parallelogram 4:12 - Delboeuf Illusion and Ebbinghaus Illusion 7:41 - The Ponzo Illusion 8:41 - The Zöllner Illusion 9:36 - The Café Wall Illusion 10:59 - The Hering Illusion 13:43 - Ambiguous Figures and Impossible Objects 18:43 - Figure and Ground Illusions 20:04 - The Spinning Dancer Illusion 22:37 - Visual Completion 25:14 - Stuff that moves 29:21 - Motion Aftereffect 31:23 - Conclusion