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By just looking at one visual scene we move our eyes around three times per second. With each of those rapid eye movements, called saccades, the retinal image is moving and changing at dazzling speeds. During a saccade, some objects in the periphery are moving to another peripheral retinal position, some from the periphery to the fovea, and others from the fovea to the periphery. One crucial question in active vision is how we integrate those sequential snapshots of information to one stable, coherent scene and establish object correspondence between the same objects appearing on different retinal positions. Hollingworth et al. (2008) proposed a paradigm to study the comparison between the pre- and post-saccadic image using surface features, whose information is stored in visual short-term memory during the time of a saccade. Thinking about millisecond lasting images before and after making saccades, comparing each surface information from the present image to the previous might seem like a quite costly process, especially when many objects have to be encoded. Here, we want to set the focus on the vision between fixations. Although (in most cases) we do not consciously perceive intra-saccadic smear presumably due to a temporal masking process (Campbell & Wurtz, 1978), our visual perception is not fundamentally suppressed during saccadic eye movements. There is preliminary evidence that motion streaks (induced by objects shifting rapidly across the retina, as during saccades) allow observers to link object locations across saccades in a perceptual task (e.g., https://osf.io/zszd9/), but does this assumption hold for implicit measures, such as automatic gaze-correction after intra-saccadic displacements? Finally, the question is whether or how intra-saccadic perception might serve a functional role in our everyday perception. Specifically, we will investigate whether intra-saccadic perception of motion streaks aids the process of establishing object correspondence across saccades. **References** Campbell, F. W., & Wurtz, R. H. (1978). Saccadic omission: why we do not see a grey-out during a saccadic eye movement. Vision research, 18(10), 1297-1303. Hollingworth, A., Richard, A. M., & Luck, S. J. (2008). Understanding the function of visual short-term memory: transsaccadic memory, object correspondence, and gaze correction. Journal of Experimental Psychology: General, 137(1), 163.
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