Optical Illusions: Your Brain Is Way Ahead of You

Do your eyes ever play tricks on you? Maybe you’ve seen something that puzzled you so much that you had to rub your eyes and look again? Chances are you may have been tricked by an optical illusion.

Optical illusions are images or pictures that we perceive differently than they really are. Put it another way, optical illusions occur when our eyes send information to our brains that tricks us into perceiving something that does not match reality.

The word “ illusion ” comes from the Latin word illudere, which means “to mock.”

Some optical illusions are physiological. This means that they’re caused by some sort of physical means in the eyes or the brain.

The mad band illusion is an example of a physiological illusion. The line in the middle of the picture is one solid color. However, because of how the eye’s retina filters the different shades on either side of the line, the right side of the line appears darker, while the left side of the line appears lighter.

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