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19 Cards in this Set
- Front
- Back
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Sclera
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Tissue around the eye, front forms the cornea, curvature of the cornea allows it to bend light into focus
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Pupil
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small round hole in iris; the iris is the muscle that regulates the size of the pupil
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Lens
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Focuses light because it can change shape; flattens out when looking farther away; rounds when looking closer; lens ofcuss light onto retina
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Photo receptor cells
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contain photo pigments which are chemicals that break down light which changes rate of neurotransmitter release
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Rods
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photo receptor cell; highly sensitve, allow you to see if its dim out
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Cones
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Photo receptor cell; sensitive to color
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Fovea
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At the center of your retina; contains only cones - allows you to see things sharply
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Ganglion
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Gets signals from rods and cones; causes action potential
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Optic nerve
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Exits eyeball through optic disk; nerves meet at a chiasm; info goes from thalamus to occipital lobes
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Optic ataxias
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loss of coordination; identify an object but not pick it up
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Optic Agnosia
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Cannot recognize objects
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Binocular depth cues
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Convergence: object gets closer, eyes turn inward
Binocular disparity: each retina has a different image |
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Monocular depth cues
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(1) Texture gradiant: when objects are closer together, they are further away
(2) Atmospheric perspective: when things are more blurry, they are further away (3) Interposition: nearer objects block view of further away (4) linear perspective: parallel lines converge |
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Bottom-up
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Recognition of components; learning letters by their shapes
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Top-down
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whole to pieces
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Proximity
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Eleements that are closer together are associated
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Closure
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Fill in the areas
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Similarity
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colors are grouped together
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simplicity
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make figures as simple as possible
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