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19 Cards in this Set

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