| Position perception in multiple object tracking. | |
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MedLine Citation:
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PMID: 21762715 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In the multiple object tracking (MOT) task, observers can typically keep track of up to four moving objects. Little is known however about the extent to which object motion is used by observers during MOT. For example, direction and speed might be used to anticipate future positions. We here ask to what extent position reports lag behind targets or instead correspond to extrapolated positions. Using a range of different motion trajectory patterns, observers tracked 1-4 targets among distracters and reported the final position of one of the targets. On average, reports corresponded to previous positions rather than the final position. This lag varied across conditions from around 10 to 70ms of the object's trajectory. Although some have suggested that extrapolation occurs during MOT, we find no evidence of anticipation of future positions of targets. The significant increase in lag with speed of the object is consistent with slow or intermittent updating of object positions during tracking. |
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Authors:
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Christina J Howard; David Masom; Alex O Holcombe |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-7-6 |
Journal Detail:
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Title: Vision research Volume: - ISSN: 1878-5646 ISO Abbreviation: - Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-7-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011. Published by Elsevier Ltd. |
Affiliation:
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Division of Psychology, Nottingham Trent University, Burton Street, Nottingham NG1 4BU, UK; Department of Experimental Psychology, University of Bristol 12a, Priory Road, Bristol BS8 1TU, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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