All Flashcards
What is the effect of short vs. long wavelengths on color perception?
Short wavelengths = purple; long wavelengths = red.
What is the effect of different light intensities on the pupil?
Bright light = small pupil; dim light = large pupil.
What causes the blind spot, and why don't we notice it?
Optic nerve leaves the eye; brain fills in the gaps.
What is the effect of lacking certain color receptors?
Colorblindness (monochromatic or dichromatic).
How does parallel processing help us recognize faces?
Brain simultaneously processes color, motion, form to quickly recognize a friend.
How does accommodation allow us to see clearly at different distances?
The lens changes shape to focus on near and far objects.
How does the afterimage effect demonstrate opponent-process theory?
Staring at a color fatigues those neurons, causing you to see the opponent color afterward.
Compare trichromatic and opponent-process theories.
Trichromatic: 3 receptors (RBG) in retina. Opponent-Process: Opposing pairs in brain.
How do trichromatic and opponent-process theories explain color vision at different stages?
Trichromatic explains color processing in the retina, opponent-process in the brain.
Compare nearsightedness and farsightedness.
Nearsighted: blurry distance vision. Farsighted: blurry near vision.