Lecture_9-22

Lecture_9-22 - Illusory Conjunctions - IC 1. Introduce Idea...

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1. Introduce Idea 2. Genuine Perceptual Phenomenon? 3. A Theory of Illusory Conjunctions* 4. Why don’t we normally perceive ICs Illusory Conjunctions - IC * slightly different than Treisman Midterm Bring Scantron: For sections next week , bring questions! Sale Price $1.00
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Green Circle? Conjunction Search Cog Lab Visual Search 2010 0 750 1500 2250 3000 4 Items 16 Items 64 Items Why is this evidence for feature integration theory?
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Treisman’s Feature Integration Theory N R R R R R R R R R R N N R N N Search N What happens if you don’t correctly combine colors and shapes? “A friend walking in a busy street “saw” a colleague and was about to address him, when he realized that the black beard belonged to one passerby and the bald head and spectacles to another.” Treisman & Schmidt, 1982
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3 7 N H A Expose 120 milliseconds First Report Digits Report all letters and color Whole Report Task 40% of the time, report incorrect combination of feature: “3 7 N H Illusory Conjunctions: Illusory combinations
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Lecture_9-22 - Illusory Conjunctions - IC 1. Introduce Idea...

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