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).
What is the path of light through the eye?
Cornea -> Pupil -> Lens -> Retina -> Optic Nerve -> Thalamus -> Visual Cortex
What is the process of transduction in the retina?
Light energy is converted into neural impulses by rods and cones.
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.