Common examples of optical illusions include pictures that seem to contradict the rules of physics,
geometric patterns that seem to be moving, and ambiguous figures that can be seen in more than one way.
Illusions that don't add up are the result of the brain filling in blanks or making assumptions as the eyes interpret visual information.
In addition to shedding light on the intriguing complexities of visual perception,
the study of optical illusions demonstrates the brain's remarkable capacity to change and make sense of the environment in novel and occasionally perplexing ways.
Visual Illusion Test: See if you can find the pig among the chickens in this picture in under six seconds!
Find the pig among the chickens in this Optical Illusion Vision Test—a visual challenge—within the allotted 6-second time limit.