When we open our eyes, the retina will receive thousands of information, but only a small portion of them will be selected for further processing in our brain, which is mainly received by the fovea of the retina. Hence, which kind of visual features can attract our eyes and make themselves received by the fovea? Chen’s theory of topological perception holds that whether there is a hole in the figure is a topological and global property, which would be processed first in the brain. Hence, as topological change, the appearance and disappearance of hole may attract the saccade end point by a bottom-up fashion. The aim of this study is to validate this hypothesis by adopting the oculomotor capture paradigm. The study results show that, comparing with the general changes, transformation of no-hole figure to a hole figure (experiment 1, 2, 5), e.g. a solid circle transforms to a ring, attracts significantly more saccadic end points directing to the region of this transformation. The general changes include: 1) no-hole figures change to other no-hole figures (experiment 1, 2), e.g. solid circle changes to S-like figure and vice versa; 2) hole figures change to other hole figures (experiment 3, 4), e.g. ring changes to hollow square and vice versa; 3) hole figures change to no-hole figures (experiment 3, 4), e.g. ring changes to S-like figure; 4) even disappearance of a figure (experiment 5), e.g. disappearance of a solid circle. At the same time, the results show that a static hole singletons can not attract more saccadic end points than no-hole singletons. Above results suggest that appearance of a hole in a figure without hole before change may be an important phenomenon in our environment, according to Chen’s theory, even it is perceived as a new object.
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