PSY270H5 Lecture Notes - Lecture 3: Visual Cortex, Electroencephalography, Visual Search
Document Summary
Objects may appear anywhere on retina in any size/orientation. Objects may be occluded by other objects. Same object can take on different forms. Template theory vs. feature analysis theory: template theory. Object is recognized when perceived information matches with a memorized template of object: feature analysis. Fixed set of elementary properties analyzed independently in parallel across visual field. Feature vs. conjunction search: feature search. Target is defined by a single elementary feature. Very efficient due to parallel processing of elementary features. Negligible set-size effect on search rt: conjunction search. Target is defined by a conjunction of elementary features. Not as efficient as feature search because of the necessity to bind the elementary features to define the target. How does perception interaction with action: perception is critical in guiding our actions, perception and action are processed in two pathways of information processing, perception (what) pathway. Damage along this pathway leads to impaired object identification performance: action (where) pathway.
