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Unformatted text preview: Problems with color vision Monochromatism-Only one cone-True color blindness – only shades of light/dark Dichromatism-Protanopia-Lack L (red) cone-Deuteranopia-Lack M (green) cone-Both protanopes & deuteranopes confuse red & green-Tritanopia-Lack S (blue) cone-Sees only reds & greens-Confuse shades of yellows grays blues Hubel & Wiesel and feature detectors Demos, etc. 2 Blind spot demo: Cover your right eye and focus On the + with your left eye. Move the page closer to your face (~12 inches or so) until the circle disappears. You’ve found your blind spot. The circle image is falling upon the optic disk where the optic nerve exits the retina. You have no receptor cells in that spot on the retina, so the brain fills in the surrounding pattern as its best guess about what should be there. Test: 50 multiple choice questions what has been covered in lectures. It will be difficult. Bring a pencil. 3...
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- Spring '07
- Psychology, Photoreceptor cell, distinct receptors Cone, -True color