| A simple proximity heuristic allows tracking of multiple objects through occlusion. | |
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MedLine Citation:
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PMID: 22271165 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Moving objects in the world present a challenge to the visual system, in that they often move in and out of view as they are occluded by other surfaces. Nevertheless, the ability to track multiple objects through periods of occlusion is surprisingly robust. Here, we identify a simple heuristic that underlies this ability: Pre- and postocclusion views of objects are linked together solely by their spatial proximity. Tracking through occlusion was always improved when the postocclusion instances reappeared closer to the preocclusion views. Strikingly, this was true even when objects' previous trajectories predicted different reappearance locations and when objects reappeared "too close," from invisible "slits" in empty space, rather than from more distant occluder contours. Tracking through occlusion appears to rely only on spatial proximity, and not on encoding heading information, likely reappearance locations, or the visible structure of occluders. |
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Authors:
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Steven L Franconeri; Zenon W Pylyshyn; Brian J Scholl |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-21 |
Journal Detail:
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Title: Attention, perception & psychophysics Volume: - ISSN: 1943-393X ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101495384 Medline TA: Atten Percept Psychophys Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Northwestern University, 2029 Sheridan Rd, Evanston, IL, 60208, USA, franconeri@northwestern.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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