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Movie S1 mov01.mov. An example specular stimulus used in the behavioral experiment. Image features undergo marked distortions during object motion.
Movie S2 mov02.mov. The same shape and motion as in mov01.mov, however now with a diffusely reflecting material. For any given frame in the motion sequence, the distorted patterns on the surface are consistent with specular reflections of the surrounding environment, and the object appears shiny. When viewed as a sequence, the patterns move with the surface, as if they were painted on instead of being reflections. The result is the distinct impression that the surface is not shiny and homogeneous, but rather matte and patterned. Image features show little or mo distortions during object motion.
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