Figure 1.

Three examples for inheritance of features. (A) The flashed vernier stimulus, two lines of the same orientation slightly offset from each other, are followed by a grating, comprising five elements without offset. Twenty-six of thirty subjects perceive a grating with an illusory offset. Task instruction is not necessary for inheritance of features to occur. (B) A clockwise tilted double-bar followed by a grating, comprising three straight elements, results in the percept of a clockwise tilted grating. (C) In the onset delay task, a double-bar is flashed at five consecutive locations for a short time (each 10–30 ms) and followed by a grating comprising five lines all displayed simultaneously at the locations where the double-bar had appeared before. Observers perceive a grating in which the elements are drawn one after the other in the direction of the double-bar moving in apparent motion.