Focused Visual Attention
Zoom-lens model (visual detection)
- focuses on spatial allocation of attention
- attention can be object-based
Feature integration model (visual search)
- rapid initial parallel process not dependent on attention
- subsequent attention-dependent serial processes in which features are combined to form objects
- attention provides “glue” binding features together into an object; can only do this one object at a time
- feature combination affected by stored knowledge
- without focused attention, features combined randomly, producing ‘illusory conjunctions’
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