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dc.contributor.authorAlvarez, George
dc.contributor.authorFranconeri, Steven L.
dc.date.accessioned2019-08-02T12:32:08Z
dc.date.issued2007-10-30
dc.identifier.citationAlvarez, George A., and Steven L. Franconeri. "How Many Objects Can You Track? Evidence for a Resource-limited Attentive Tracking Mechanism." Journal Of Vision 7, no. 13 (2007): 14.1-10.en_US
dc.identifier.issn1534-7362en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41056876*
dc.description.abstractMuch of our interaction with the visual world requires us to isolate some currently important objects from other less important objects. This task becomes more difficult when objects move, or when our field of view moves relative to the world, requiring us to track these objects over space and time. Previous experiments have shown that observers can track a maximum of about 4 moving objects. A natural explanation for this capacity limit is that the visual system is architecturally limited to handling a fixed number of objects at once, a so-called magical number 4 on visual attention. In contrast to this view, Experiment 1 shows that tracking capacity is not fixed. At slow speeds it is possible to track up to 8 objects, and yet there are fast speeds at which only a single object can be tracked. Experiment 2 suggests that that the limit on tracking is related to the spatial resolution of attention. These findings suggest that the number of objects that can be tracked is primarily set by a flexibly allocated resource, which has important implications for the mechanisms of object tracking and for the relationship between object tracking and other cognitive processes.en_US
dc.language.isoen_USen_US
dc.publisherAssociation for Research in Vision and Ophthalmology (ARVO)en_US
dash.licenseLAA
dc.subjectOphthalmologyen_US
dc.subjectSensory Systemsen_US
dc.subjectmultiple object trackingen_US
dc.subjectMOTen_US
dc.subjectmulti-element trackingen_US
dc.subjectattentive trackingen_US
dc.subjectFINSTen_US
dc.subjectFLEXen_US
dc.subjectattentionen_US
dc.titleHow Many Objects Can You Track?: Evidence for a Resource-Limited Attentive Tracking Mechanismen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalJournal Of Visionen_US
dash.depositing.authorAlvarez, George
dc.date.available2019-08-02T12:32:08Z
dash.affiliation.otherFaculty of Arts & Sciencesen_US
dc.identifier.doi10.1167/7.13.14
dc.source.journalJournal of Vision
dash.source.volume7;13
dash.source.page14
dash.contributor.affiliatedAlvarez, George


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