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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: literal ones that create images that are different from the objects that compose them, physiological ones that are the effects on the eyes and brain of excessive stimulation of a specific type (brightness, color, size, position , inclination, movement), and cognitive illusions, the result of unconscious inferences.