Class Notes (834,331)
Canada (508,487)
Psychology (5,208)
PSYCH 1XX3 (1,104)
Joe Kim (1,023)
Lecture

February 25, 2013

2 Pages
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Department
Psychology
Course
PSYCH 1XX3
Professor
Joe Kim
Semester
Winter

Description
Visual Processing and Top­down processing  • We have a very biased view of the world as a result of our quickly operating systems • Ie: Chess pieces being the same colour but appear black/white We are biased to assume the world is experienced the same!! Visible spectrum • The wavelengths of magnetic images that we can detect and see • Humans cannot see all wavelengths • Infrared: humans don’t see—but we can perceive them (our interpretation of infrared =  heat on skin) o Rattlesnake sees infrared  Bias: Limits of visual detection shape your view of the world • When you wear infrared glasses you can see heat and where it came from Bias: Colours around you are just in your head Why is colour information important? • Camouflage▯environmental strategies • Advertising brightly may scare predators off to show that he is poisonous Adaptive Significance: Foraging Hypothesis • Marmoset: 2 basic colour perception (di and trichromats) o Tri: bright red fruit pops out o Di: cannot see bright red fruit Experiment: marmoset ▯ 2 varieties in field • Will the trichromat have an advantage in finding coloured kix cereal? YES! They beat  dichromats.  Why is this important? ▯ daptive significance • Facial hue hypothesis • What differs faces to make them more attractive • Higher estrogen count faces have more red faces!  o Adding blue—adding red – redness is better in women o Higher estrogen= greater fertility Unique combined receptor activity produces distinct colour perception • Wavelengths
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