Illusion

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-This app is the best collection of illusions.

-There are a total of 20 illusions in this app

**Usage Tips**

Place your phone or tablet in a vertical position and look center for 30 seconds

after 30 seconds look away to see the results

What is an illusion?

An illusion (also called a visual illusion) is an illusion caused by the visual system and characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a percent that does not tally with a physical measurement of the stimulus source. There are three main types: literal optical illusions that create images that are different from the objects that make them, physiological illusions that are the effects of excessive stimulation of a specific type (brightness, color, size, position, tilt, movement), and cognitive illusions, the result of unconscious inferences. Pathological visual illusions arise from a pathological exaggeration in physiological visual perception mechanisms causing the aforementioned types of illusions.