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18 Cards in this Set
- Front
- Back
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tough, transparent, protective layer that covers the front of the eye and bends light reays inward through the pupil.
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Cornea
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transparent disc-shaped structure being the iris and the puil that changes shape as it focuses on objects at varying distances
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Lens
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layer of tissue that is locared on the inner surface of teh eyeball and contains that sensory receptors for vision
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Retina
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light-sensitive receptor cells in the retina that look like slender cylinders and allow the eye to respond to as few as five photons of light.
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Rods
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light-sensitive receptor cells in the retina that enable humans to see color and fine detail in adequate light but do not function in very dim light.
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Cones
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point in each retina where there are no rods or cones because the cable of ganglion cells is extending through the retinal wall
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Blind spot
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nerve that carries visual information from each retina to both sides of the brain.
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Optic nerve
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Three components of color vision
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hue= dimension of light that refers to the specific color prceived
Saturation= purity of a color Brightness= intensity of the light energy |
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Rods vs. Cones
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Rod= receptor cell in the retina that are sensity to light changes
Cone= receptor cells in the retina that enable humans to see fine detail and color in adequate light |
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The inability to distingquish certain colors from one another
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Color blindness
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Visual sensation that remains after a stimulus is withdrawn.
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Afterimage
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Figure-ground= background
Similarity= alike grouped together Proximity= near grouped together Continuity= "flow" into pattern Closure= see completed figures Prognanz= see best/most correct |
Gestalt principles of grouping
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Depth cues that can be perceived by one eye alone.
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Monocular depth cues
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Convergence occurs when the eyes turn inward to focus on nearby objects.
Binocular disparity provides important cue for depth perception. The farther away from the eyes the objects being looked at, the less is the disparity. |
Convergence vs. binocular disparity
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real motion= perception of motion tied to movements of real objects through space
apparent motion= perceptions of motion that seem to be psychologically constructed in response to various kinds of stimuli |
Real vs. apparent motion
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E.G. Boring's "Old Woman/Young Woman"
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The same drawing can convey such dramtically different perceptions.
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False perception or misperception of an actual stimulus in the environment
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Illusion
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Whether visual perception occurs in the same parts of the brain no matter what you are looking at.
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Yes.
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