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Title page for ETD etd-04022010-161315


Type of Document Dissertation
Author Ko, Philip
URN etd-04022010-161315
Title The objects of visual attention and memory.
Degree PhD
Department Psychology
Advisory Committee
Advisor Name Title
Adriane Seiffert Committee Chair
Gordon Logan Committee Member
Rene Marois Committee Member
Robert Bodenheimer Committee Member
Keywords
  • Visual Cognition
  • Memory
  • Attention
  • Objects
Date of Defense 2010-03-30
Availability unrestricted
Abstract
Are the same object representations used in visual attention and visual memory? This dissertation summarizes three projects that have examined different aspects of this question. First, dual-task methods were used to examine whether attention and memory share a common capacity for object representation. The results showed more efficient dual-task performance when attention and memory targeted the same set of objects compared to different sets of objects, suggesting a shared capacity for objects in attention and memory. Second, multiple-object tracking (MOT) and target recovery (TR) were used to examine whether a common process, sensitive to color consistency, mediated both tasks. The results suggested that periodically sampling visual information and matching it to representations in memory preserve object continuity. Finally, the updating of objects in memory was closely examined. The results revealed that the effects of updating were restricted to the update feature, and did not spread to the other features of the updated object. Together, these results were fit into a model of visual object continuity that is described in the general discussion.
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