Modified: 2020-03-18
The QuickTime movie shows a much simpler version of the phi phenomenon. Two yellow circles flash on and off alternately. Yet we see a yellow dot sliding back and forth across a green background. At the end, another example of perceived motion occurs. The words "The End" appear to approach us.
Both examples show how the brain is taking visual information and interpreting it as movement. Special effects in movies, i.e., "Anaconda," "Fourth of July," and "Godzilla" exploit the built in perceptual rules we possess.