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An illusion is a distortion of sensory perception, caused by the way the brain normally organizes and interprets the information it receives.
There are three types of optical illusions: literals that create images that are different from the objects that make them up, the physiological ones that are the effects on the eyes and the brain of excessive stimulation of a specific type (brightness, color, size, position, inclination, movement), and cognitive illusions, the result of unconscious inferences.
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