“…This possibility, although consistent with subjects' claims that they are ocularly tracking the IM target (e.g., Duncker, 1929;Mack, Fendrich, & Wong, 1982), may be rejected because several studies have reported that fixation of an IM target is accurate and, thus, follows its physical, rather than its perceptual, path (Bassili & Farber, 1977;Brosgole, Cristal, & Carpenter, 1968;Mack et al, 1982).…”