This image is a static image, there is no animation in it, yet when you look at it the image appears to move. This is because there is too much information for your visual system to process. When your eyes scan the image your brain loses information that it had scanned before and an impression of movement is created. (To prove that it is not moving focus on the head or tail of one of the ‘snakes’.)
Too much information paralyses the brain in other ways as well. If you want to generate more ideas about any situation try to cut down on the information either by focusing on the most important information and ignoring the rest, or focus on one individual piece of the information at a time.