Apparent motion is an example of illusory motion. Apparent motion is a way to produce the perception of motion without motion being present. When two slightly different stimuli are presented one after another the perception of movement is created. Apparent motion is constantly taking place. Blinking your eyes can be explained by apparent motion. The reason you don't see a black screen every time you blink is because your brain fills in that brief period of time with an assumption off of what is taking place while your eyes are open. An example of apparent motion is a flip book.