The Concept of 'Veto'-Attributes in Motion Perception

When the individual elements of a regular visual array are consistently watched in space and time along at least one of their surface (e.g. color, luminance, depth) or form (e.g. orientation, spatial frequency) attributes, motion perception is strongly dependent on the matching of the remaining stimulus attributes. Unmatched color, depth, spatial frequency and polarity attributes always veto the percept of motion, independently of the critical matched attribute. Unmatching of some other attributes such as luminance (contrast) or orientation is of little consequence for the perception of motion elicited by any other matched attribute.