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44 Cards in this Set
- Front
- Back
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What is sensation?
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Stimulation of sense organs i.e. light waves
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What is perception?
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Interpretation of sensory
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What is distal stimuli?
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stimuli lies distant, outside the body
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What is proximal stimuli?
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stimulus energies placed on sensor receptors
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What is perceptual hypothesis?
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natural process of brain making hypothesis about stimulation, form shpaes
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What is job of the lens?
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focuses image on retina by focusing light waves
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What is the job of the pupil?
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regulates amount of light coming through
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What is the job of the retina?
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absorbs light, processes images, and sends visual information to the brain
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What is a rod?
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receptor in night and peripheral vision
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What is a cone?
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receptor in daylight and color vision
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What is the fovea?
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tiny spot in center of retina
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Where is visual acuity at the greatest spot?
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fovea
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What is dark adaptation?
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eyes are more sensitive to light in low illumination
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What is light adaptation?
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eyes are less sensitive to light high illumination
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What is the optic chiasm?
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where crossover of information of the brain occurs
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What is job of the lens?
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focuses image on retina by focusing light waves
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What is the job of the pupil?
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regulates amount of light coming through
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What is the job of the retina?
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absorbs light, processes images, and sends visual information to the brain
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What is a rod?
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receptor in night and peripheral vision
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What is a cone?
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receptor in daylight and color vision
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What is the fovea?
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tiny spot in center of retina
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Where is visual acuity at the greatest spot?
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fovea
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What is dark adaptation?
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eyes are more sensitive to light in low illumination
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What is light adaptation?
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eyes are less sensitive to light high illumination
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What is the optic chiasm?
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where crossover of information of the brain occurs
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What is a feature detector?
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neurons that respond to specific features of more complex stimuli
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What are the three feature detectors?
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simple cells, complex cells, hypercomplex cells
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What are simple cells picky about?
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width, orientation, position
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What are complex cells picky about?
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width, orientation
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What are hypercomplex cells picky about?
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width
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What is the trichromatic theory?
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people only see in red, green, blue
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Where does color mixing generate from?
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trichromatic theory
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What is the opponent process theory?
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"color mixing", antagonistic response of 3 colors
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What is feature analysis?
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process if detecting specific elements in visual input and assembling them into more complex forms.
i.e. "T" |
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What is the figure and ground?
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figure is the thing being looked at, ground is the background it stands against
i.e. vase or two faces? |
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What is proximity?
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things that are near each other seem to belong together
i.e. dots, make two circles |
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What is similarity?
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group things that are similar
i.e. red dotted smiley faces |
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What is continuity?
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follow the direction you've been led, connect points to make "line"
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What is closure?
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group elements to create closure, or completeness
i.e. unfinished circle |
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What is connectedness?
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group things together when they're connected
i.e. two couples instead of four people |
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What is a binocular depth cue?
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distance based on differing views of two eyes
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What is retinal disparity?
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objects within 25 feet project images slightly different locations on the right and left retinas, so right and left see diff views
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What is convergence?
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sensing eyes converge toward each other as they focus on closer objects
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What do monocular cues control?
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linear perspective, relative size, interposition, texture gradient, height in plane, shadowing
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