June 2006
Volume 6, Issue 6
Vision Sciences Society Annual Meeting Abstract  |   June 2006
Visual memory for colors of tracked objects
Author Affiliations
  • Philip C. Ko
    Vanderbilt University
  • Adriane E. Seiffert
    Vanderbilt University
Journal of Vision June 2006, Vol.6, 1080. doi:10.1167/6.6.1080
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      Philip C. Ko, Adriane E. Seiffert; Visual memory for colors of tracked objects. Journal of Vision 2006;6(6):1080. doi: 10.1167/6.6.1080.

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      © ARVO (1962-2015); The Authors (2016-present)

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The primary tenet of object-based theories of attention is that observers have access to all features of attended objects. In studies of visual short-term memory (VSTM), memory for arrays of color-shape conjunctions present no additional cost compared to memory for arrays of color features (Luck & Vogel, 1997). However, in dynamic settings, such as multiple-object tracking (MOT), maintenance of target locations may prevent storage of surface features, like colors. We investigated whether colors could be stored in dynamic objects with a VSTM / MOT dual-task paradigm. On each trial, participants encoded colors of three out of ten dots in a visual display (VSTM task). Colors were removed and participants attentionally tracked three target dots (MOT task). Either the same dots were used in the VSTM and MOT tasks (Within-objects condition) or different dots were tracked (Between-objects condition) while VSTM dots remained stationary. If object-based attention supports tracking, there should be less dual-task interference in the Within-objects condition. This hypothesis was confirmed, as the Within-objects condition produced higher percent correct in the VSTM task (t(12) = 2.2, p<0.05) and MOT task (t(12) = 4.1, p<0.01) compared to the Between-objects condition. Additionally, Cowan's formula (2001) revealed greater retention of information in the Within-objects condition (K = 4.1) than the Between-objects condition (K = 3.4). These results provide a first step towards confirming whether the key property of object-based attention, access to all object features upon selection, is common to visual memory and attention to dynamic objects.

Ko, P. C. Seiffert, A. E. (2006). Visual memory for colors of tracked objects [Abstract]. Journal of Vision, 6(6):1080, 1080a, http://journalofvision.org/6/6/1080/, doi:10.1167/6.6.1080. [CrossRef]

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