AP psych Unit 3 Sensation and Percption

Amplitude

height of the wave

Blind spot

where optic nerve exits

color blindness

a genetic condition that affects someone perception of color mainly red or green meaning cant differentiate the two colors

Cornea

the thin outer covering of the eye

Farsightedness

Not being able to see for away

fovea

center of macula, acuity at the highest

Ganglion Cell

Nerves that transmit visual messages

Lens

focuses light to the retina

Nearsightedness

Not being able to see close up

Retina

Back of the eye; contains rods and cones

Rods

Detecs black and white vision

Sensation

detection of enviromental stimlui such as sound, object, and smells

Thalmus

relays information

Transduction

process by which the eye converts light into electrical signals that the brain can understand

Trichromatic Theory

human color vision depends on three distinct types of color receptors (cones) in the retina, each maximally sensitive to a different wavelength of light: red-long green-medium blue-short

Visual/Optic nerve

thick bundle of nerve fibers that transmits visual information from the retina of the eye directly to the brain

Accomidation

Lens changes shape to focus near on near or far objects onto the retina

Wavelength

distance from one peak to the other