To be identified as targets or rejected as distractors, items must be compared to target templates held in memory. There is a resolution FVF, an FVF governing exploratory eye movements, and an FVF governing covert deployments of attention. Three types of functional visual field (FVFs) describe the nature of these foveal biases. It will favor items near the point of fixation. Guidance will not be uniform across the visual field. Selective attention is guided to the most active location in the priority map approximately 20 times per second. These sources are combined into a spatial “priority map,” a dynamic attentional landscape that evolves over the course of search. In GS6, this guidance comes from five sources of preattentive information: (1) top-down and (2) bottom-up feature guidance, (3) prior history (e.g., priming), (4) reward, and (5) scene syntax and semantics. Attention is “guided” so that items can be processed in an intelligent order. Attention is used to select items so that their features can be “bound” into recognizable objects. However, we cannot recognize more than a few items at a time. When we encounter a scene, we can see something everywhere. This paper describes Guided Search 6.0 (GS6), a revised model of visual search.
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