Quiz4_Answers_2012 - 1 What factors contribute to high...

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1. What factors contribute to high spatial resolution in the visual system? ( b ) a) High density of cones throughout the entire retina b) 1:1 connections between cones and retinal ganglion cells c) High density of rods in the fovea d) Several cones converging onto single bipolar cell in the fovea 2. True/False Photoreceptors show graded responses (no action potential) and depolarize to light ( False ) 3. Compare Magno cells vs. Parvo cells (looking for two comparisons) Magno respond better to high temporal & low spatial frequencies; selective to contrast; little selectivity for color Parvo respond better to low temporal & high spatial frequencies; selective for color; low contrast sensitivity 4. Explain how the visual system allows for depth perception: Binocular disparity selectivity objects at different distances cast images onto different positions in the two retinae (slightly different images are seen by the left and the right eyes) 5. How are the anterior and posterior chambers of the eye defined?
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Quiz4_Answers_2012 - 1 What factors contribute to high...

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