If two images are displayed in rapid cyclical order, they are perceived as a single, fused image. However, recent studies describe how perceptual grouping can be influenced by minor offsets of this sort. It has been suggested that this effect reveals the presence of a neural temporal binding mechanism which would serve to keep multiple mental representations of one object distinct from those of other, simultaneously perceived objects. An alternative explanation is that fixational eye movements are responsible for converting the offsets into spatial ones, and that it is the disjointed form of the resultant stimulus that influences perception.