PSY 252 Lecture Notes - Lecture 6: Optical Flow, Biological Motion, Animacy
Document Summary
Vision is selective which is better than exhaustive. Exhaustive would take too much processing and gives you way too much information. Goal of perception is to be selective. You can get what you want when you want it, just look. Certain categories of stimuli have special processes of visualization. Margaret thatcher illusion: upside down faces with right side up facial features. Visual system processed faces holistically only when they are right side up. Dedicated area of the brain (ffa) just for processing faces fmri study proved this by showing pictures of faces, houses, and a black screen with a fixation. Face blindness disorder (prosopagnosia) is because of damage to this area. Found angry faces at the same rate, but with other emotions, it would change with the number of distractions (blue: angry faces, red: other emotions) Looming motion: when something is coming toward you in a collision path. Point light walker displays (isolate just the biological motion)
