Sequin Illusion

Yi-Tsen Kuo and Philip Tseng : “Sequin Illusion”. Taiwan

The Sequin Illusion can be seen when shapes are drawn in dotted lines, against a background of different brightness. This can be done either with bright dots over a dark background or dark dots over a bright background, though the latter usually works better. The illusion appears as a wave of dark (or bright) spots inside the dotted shapes (like sequins!) in peripheral vision. Though similar in appearance with the popular Hermann Grid Illusion, the Sequin Illusion is likely a different type of illusion as it occurs inside the shapes, and is not eliminated by slanted lines or non-rectangular shapes.

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