vision notes

Question 1

hue

Answer 1

a dimension of color determined by wavelength of light

Question 2

wavelength

Answer 2

the distance from the peak of the next, results in different colors

Question 3

intensity/brightness

Answer 3

amount of energy in a wave determined by amplitude; related to perceived brightness

Question 4

amplitude

Answer 4

how high each wave is

Question 5

nearsightedness

Answer 5

a condition in which nearby objects are seen more clearly than distant objects because the eye is elongated in shape

Question 6

farsightedness

Answer 6

a condition in which far away objects are seen more clearly than near objects because the eye is shortened

Question 7

retina

Answer 7

the light-sensitive inner surface of the eye containing the receptor rods and cones plus layers of other neurons that process visual info

Question 8

fovea

Answer 8

central point in the retina, within which the eyes cones cluster together and because of this there is little color vision in the farthest periphery of our vision

Question 9

cones

Answer 9

sensitive to color and fine detail, surrounds the fovea

Question 10

rods

Answer 10

sensitive to light, surrounds the retina

Question 11

after light is received in the cones and rods it goes to…

Answer 11

the bipolar cells then the ganglion cells which then forms the optic nerve

Question 12

feature detectors

Answer 12

nerve cells in the visual cortex that respond to specific features like edges, angel, length, and movement

Question 13

young-helmholtz (trichromatic) theory

Answer 13

based on behavioral experiments, Helmholtz suggested that the retina contains 3 receptors (cones) sensitive to red, blue, and green colors

Question 14

color blindness

Answer 14

genetic disorder which prevents individuals from discriminating between certain colors due
to a weakness in or lack of one in the cones

Question 15

opponent-process theory

Answer 15

we process 3 primary colors opposed in pairs of red-green, blue-yellow, and black-white