Demonstrations and Tutorials

Color vision demonstrations - dealing with issues of invariance, by Hans Irtel.
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Exploratorium on-line exhibits - Great interactive demonstrations in experimental psychology and psychophysics, from the Exploratorium science museum in San Francisco
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Myron Braunstein's demos - Interesting cases of how we perceive structure from motion.
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Impossible world - Depictions of impossible figures. Optical illusions include wireframe and greyscale images, animation, and links.
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Motion perception tutorial - by George Mather
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Visual physiology interactive tutorial - by George Mather. Includes demonstrations of many important effects and illusions.
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Colloquium of Visual Illusion - A gallery of classic and original visual illusions
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