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- W2400545144 abstract "We explore the interaction between local-global information processing in visual perception, leveraging a visual phenomenon known as crowding, whereby the perception of a target stimulus is impaired by the presence of nearby flankers. The majority of established models explain the crowding effect in terms of local interactions. However, recent experimental results indicate that a classical crowding effect, the deterioration in the discrimination of a vernier stimulus embedded in a square, is alleviated by the presence of additional flanker squares (“uncrowding”). Here, we propose that crowding and uncrowding arise from cortical inferences about hierarchically organized groups, and formalize this concept using a hierarchical Bayesian model. We show that the model reproduces both crowding and uncrowding for flanked vernier discrimination. More generally, the model provides a normative explanation of how visual information might simultaneously flow bottom-up, top-down, and laterally, to allow the visual system to interactively process local and global features in the visual scene." @default.
- W2400545144 created "2016-06-24" @default.
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- W2400545144 date "2015-01-01" @default.
- W2400545144 modified "2023-09-23" @default.
- W2400545144 title "A Bayesian hierarchical model of local-global processing: Visual crowding as a case-study." @default.
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