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29 Cards in this Set

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  • Back
absolute thresholds
minimum detectable stimulus intensities for specific types of sensory input...detected 50% of the time
just noticeable difference
smallest difference detectable
subliminal perception
when stimuli are below the perceptual thresholds but still have pratical effects
sensory adaptation
gradual decline in sensitivity to prolonged stimulation
inattentional blindness
failure to see something because one's attention if focused elsewhere
bottom-up processing
a progression from individual elements to the whole
top-down processing
a progression from the whole to the elements
figure/ground
whether you see the backround of the figure...ex:// vase or two faces
proximity
elements that are close to one another tend to be grouped together
closure
viewers tend to supply missing elements to close or complete a familiar figure
similarity
elements that are similar tend to be grouped together
simplicity
viewers tend to organize elements in the simplest way possible
continuity
viewers tend to see elements in ways that produce smooth continuation
trichromatic theory
says that the eye has three groups of receptors sensitive to wavelengths associated with red, green, and blue
opponent process theory
says that receptors make antagonistic responses in three pairs of colors
light
electromagnetic radiation
amplitude (vision)
perception of brightnessq
wavelength (vision)
perception of color
purity (vision)
mix of wavelengths
lens
focuses lightrays on the retina
cornea
where light enters the eye
iris
colored ring of muscle, constricts or dilates via the amount of light
pupil
regulates amount of light
retina
absorbs light, processes images
optic disk
optic nerve connection; blind spot
rods
skinny and long, black and white vision, not on fovea, dimly lit
cones
short and fat, colors, on fovea and scattered around fovea, well lit
binocular cues
clues about distance based on differing views of the two eyes
monocular cues
clues about distance of differing views based on either eye alone