PSYC2013 Lecture Notes - Lecture 2: Visual Search, Search Theory, Perfect Sense
27 Dec 2018
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Feature" might be a unique colour, shape, or orientation. A fast, initial, parallel processing of features (preattentive processing) A slow, serial process of combining features to form objects. Easier because you are looking for the red circle in the midst of red squares or in the midst of blue circles. Conjunction search : look for the red circle in the midst of a mix of blue circles and red squares. Illusory conjunction : attention is needed to bind things together. Texture segregation : look for the border, defined by either features (left) or conjunctions (right) Harder when the visual search is mixed up rather than uniformed. Circles and v"s c. red and blue d. mixed up. Performance speed on a detection task as a function of target definition and display size. Targets defined by a single feature (i. e blue letter or an s) should be detected rapidly and in parallel.
