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Created page with "== Introduction == The spiral aftereffect is a visual illusion that occurs when an individual stares at a rotating spiral for a period of time and then looks at a stationary object, which appears to be moving in the opposite direction. This phenomenon is a type of motion aftereffect, a broader category of visual illusions where prolonged exposure to a moving visual stimulus affects the perception of a subsequent stationary image. The spiral aftereffect is significan..."
