Sensation and Perception Exam 1 University of Pittsburgh
Cones - CORRECT ANSWER -Good for moderate to high light conditions. good for detailed vision. convey information about color
myopia - CORRECT ANSWER -Inability to see distant object clearly
refractive myopia - CORRECT ANSWER -the cornea and/or the lens bends the light too much
axial myopia - CORRECT ANSWER -eyeball is too long
fovea consists solely of - CORRECT ANSWER -cones
Rods - CORRECT ANSWER -Specialized visual receptors that play a key role in night vision and peripheral vision.
Visual pigment molecules have 2 components called - CORRECT ANSWER -Opsin: A
large protein
Retinal: A light sensitive molecule
Visual transduction occurs when the retinal absorbs one photon and changes its shape. This is called... - CORRECT ANSWER - isomerization
Purkinje shift - CORRECT ANSWER -Enhanced sensitivity to short wavelengths during dark adaptation when the shift from cone to rod vision occurs
All-cone foveal vision results in high visual acuity because _______ - CORRECT ANSWER -One-to-one wiring with ganglion cells leads to ability to discriminate details
Visible spectrum for humans - CORRECT ANSWER -400-700 nanometers
Most perceived light is - CORRECT ANSWER -reflected light
Brightness - CORRECT ANSWER -is the overall light level of a scene, and is related to the intensity of the light source. It depends on the degree of dark adaption
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