Optical Illusions Cheat The Mind

Optical Illusion

An optical illusion (also called a visual illusion) is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a perception 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 ones that are the effects on the eyes and brain of excessive stimulation of a specific type (brightness, colour, size, position, tilt, movement), and cognitive illusions, the result of unconscious inferences.

Here are some examples:

1.-

This is a still image, but if you move your eyes around the central square pattern, the stars will seem to move. The effect is due to a phenomenon that's colloquially called "eye jitter." The eyes, constantly moving by imperceptible amounts, amplify the difference between the two patterns and create the illusion of motion.

2.-

What appears to be a fish is actually a meticulous