lect0406

lect0406 - ganglion cells have concentric center-surround...

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Cogs 160: Neural Coding in Sensory Systems Cogs 272: Computational Models of Sensory Coding Prof. Angela Yu Department of Cognitive Science April 6, 2010
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Week 1: Writing Assignment Answer one of the following questions based on this week's material (one-page typewritten response, double-spaced, due Thursday 04/08/10). Do specificity of neural computation and information loss always go hand in hand? Describe three examples in the retina to support your answer. Describe two general strategies that retinal neurons employ to reduce noise in processing. What is rectification? What is its computational function? Give two specific examples in which it performs important functions in the retina. Our interpretation of what neurons care about largely depends on what kind of stimuli are used in the experiment. For example, using point stimuli, it was thought for a long time that most retinal
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Unformatted text preview: ganglion cells have concentric center-surround receptive fields. Give examples of reginal ganglion cells that appear to have ordinary center-surround responses for point stimuli, but in fact encode more specific information when richer stimuli are used. Extra credit (one paragraph, due Thursday 04/08/10). Why is it important for inhibition to take place postsynaptically in the neural circuitry that computes Approaching Motion (P. 154)? Why is it not as important in the neural circuitry that computes Object Motion? Beyond the Retina LGN & Striate Cortex Cortical Magnification Factor Laminar Structure of Striate Cortex Layer 1: dendrite & axons Layer 2/3: proj. to extrastriate cortex Layer 4: thalamocortical input, proj. to other layers Layer 5/6: feedback proj. to thalamus Orientation Selectivity...
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This note was uploaded on 09/15/2011 for the course COGS 1 taught by Professor Lewis during the Spring '08 term at UCSD.

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lect0406 - ganglion cells have concentric center-surround...

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