When an artist creates a work that deceives our eyes into believing there is motion as time passes, this is called?

This is known as Illusion of motion or illusory motion. Illusion of motion tricks your eyes into thinking that the image or images you are looking at are moving when in fact they are actually static. It is a technique used by artists to create an optical illusion and deceive your cognition into believing something that isn't actually real. It can create some very interesting and clever pieces of artwork.

i think it is northeast