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{
    "pk": 25849,
    "title": "A Bayesian hierarchical model of local-global processing: visual crowding\nas a case-study",
    "subtitle": null,
    "abstract": "We explore the interaction between local-global informa-\ntion processing in visual perception, leveraging a visual\nphenomenon known as crowding, whereby the perception\nof a target stimulus is impaired by the presence of nearby\n\nankers. The majority of established models explain\nthe crowding e?ect in terms of local interactions. How-\never, recent experimental results indicate that a classical\ncrowding e?ect, the deterioration in the discrimination\nof a vernier stimulus embedded in a square, is alleviated\nby the presence of additional \nanker squares (\\uncrowd-\ning\"). Here, we propose that crowding and uncrowding\narise from cortical inferences about hierarchically orga-\nnized groups, and formalize this concept using a hierarchi-\ncal Bayesian model. We show that the model reproduces\nboth crowding and uncrowding for \nanked vernier discrim-\nination. More generally, the model provides a normative\nexplanation of how visual information might simultane-\nously \now bottom-up, top-down, and laterally, to allow\nthe visual system to interactively process local and global\nfeatures in the visual scene.",
    "language": "eng",
    "license": {
        "name": "",
        "short_name": "",
        "text": null,
        "url": ""
    },
    "keywords": [],
    "section": "Papers",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/98m8569z",
    "frozenauthors": [
        {
            "first_name": "Shunan",
            "middle_name": "",
            "last_name": "Zhang",
            "name_suffix": "",
            "institution": "University of California, San Diego",
            "department": ""
        },
        {
            "first_name": "Man",
            "middle_name": "",
            "last_name": "Song",
            "name_suffix": "",
            "institution": "University of California, San Diego",
            "department": ""
        },
        {
            "first_name": "Angela",
            "middle_name": "J",
            "last_name": "Yu",
            "name_suffix": "",
            "institution": "University of California, San Diego",
            "department": ""
        }
    ],
    "date_submitted": null,
    "date_accepted": null,
    "date_published": "2015-01-01T18:00:00Z",
    "render_galley": null,
    "galleys": [
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/cognitivesciencesociety/article/25849/galley/15473/download/"
        }
    ]
}