ReviewQuestionsWeek3and4

ReviewQuestionsWeek3and4 - BIPN 142 Review Questions -...

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1 BIPN 142 (by Jannon Fuchs, to accompany Neuroscience , Purves et al ., Fourth Edition, Sinauer) Chapter 11: Vision: The Eye 1. Do you have more rods or cones in your retina? In your fovea? What accounts for the fact that your rods do not contribute to vision in daylight? 2. Is the retina part of the central nervous system? Explain. 3. Photoreceptors are atypical in that they are depolarized ( ! 40 mV) in darkness and are hyperpolarized by light stimuli. What components of photoreceptors account for this? 4. What is the evidence that color vision in primates is trichromatic? 5. What observations led Kuffler to define two types of retinal ganglion cells, off-center and on- center? Explain how this receptive field organization is useful in detecting luminance contrast and changes in light intensity. 6. Why is light adaptation in the retina so important, and what does it involve?
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This note was uploaded on 10/14/2010 for the course BIOLOGY bipn 142 taught by Professor Aaron during the Spring '10 term at UCSD.

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ReviewQuestionsWeek3and4 - BIPN 142 Review Questions -...

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