p306fig08.25 The Motion BCS model can explain and simulate all the long-range apparent motion percepts that this chapter describes.<BR>||  Motion BCS model (Grossberg, Rudd 1989, 1992) Level 1: discount illuminant; Level 2: short-range filter, pool sustained simple cell inputs with like-oriented receptive fields aligned in a given direction.  Sensitive to direction-of-contrast; Level 3: Transient celss with unoriented receptive field. Sensitive to direction-of-change