The Guidance of Visual Search by Knowledge and Memory

Colloquium
Date: 
11 June 2013
Begin time: 
18:00
End time: 
19:30
Room: 
C01-148

Abstract

Visual search is central to intelligent human behavior. Natural tasks typically require the sequential selection of individual objects as each becomes relevant to the task. To put sugar in a teacup (a sub-task within the larger behavior of making tea), one must select the spoon, the sugar bowl, and then the teacup. Each selective operation requires that top-down processes be reconfigured to guide attention efficiently to the currently relevant object. I will discuss the mechanisms by which knowledge and memory are used to exert this guidance, with particular focus on the role of visual working memory (VWM) in maintaining a template of the desired object and the influence of VWM on perceptual selection.