Perception at the blind spot and similarity grouping

Abstract

Perceptual completion at the blind spot was investigated by using patterns with a vertical blank stripe. The perceptual completion occurred across the vertical blank stripe in the test pattern, which was presented at the blind spot when a similarity grouping based on differences in the property of elements constituting the vertical blank stripe pattern was formed. There was no interaction between similarity groups in the filling-in process. The results obtained here indicate that perceptual completion is generated after similarity grouping, and that similarity groups are independent of each other in perceptual completion. The results seem to suggest that filling-in is closely related to a segregative process based on stimulus differences. © 1984 Psychonomic Society, Inc.