Joseph Anderson & Barbara Fisher Anderson (University of Central Arkansas)
"Since we know that the individual pictures of a motion picture are not really moving, and that our perception of motion is therefore an illusion, and since we now know that the effect has nothing to do with persistence of vision or phi movement, we suggest that henceforth the phenomenon of motion in the motion picture be called by the name used in the literature of perception—short-range apparent motion."
"Motion in the motion picture is, as we have said, an illusion, but since it falls within the short-range or "fine grain" category it is transformed by the rules of that system—that is, the rules for transforming real continuous movement. The visual system can (and does) distinguish between long-range and short-range apparent motion, but it seemingly cannot distinguish between short-range apparent motion and real motion. To the visual system the motion in a motion picture is real motion."