Preservation and change of hue, brightness, and form in apparent motion

Subjects were presented with several ambiguous apparent motion situations, in which the elements of each single array differed in hue, brightness, or form. One of the interpretations of each situation preserved the hue (or brightness or form) of each element across arrays. The others did not. It was found that the type of motion perceived is not biased at all toward preserving brightness and form and that hue tends to be preserved in one situation but not in others. The findings are interpreted to support the notion that processing of motion, color, and form is done by parallel processes that may have different processing rates and that may utilize each other’s final or intermediary output.