Illusion
We are your main source for optical illusions, brain teasers and more. This illusion consists of a real sensory stimulus. By visiting our site, you are agreeing that cookies will be used for analysis, relevance and advertising purposes. Scientists have studied a famous optical illusion to monkeys reveals it works by tricking the neurons that perceive global motion into overriding those that track local. When was the last time you read a story where the villain was celery?