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See Inside The Science of Perception

Art as Visual Research: Kinetic Illusions in Op Art [Preview]

Art and neuroscience combine to create fascinating examples of illusory motion

THE OUCHI ILLUSION
This illusion is by Japanese op artist Hajime Ouchi. Move your head back and forth as you let your eyes wander around the image and see how the circle and its background appear to shift independently of each other. Vision scientist Lothar Spillmann of the University of Freiburg in Germany stumbled on the illusion while browsing Ouchi's book Japanese Optical and Geometrical Art, which was first published in 1973. Spillmann then introduced the Ouchi illusion to the vision sciences community, where it has enjoyed immense popularity.

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