pradeep_slides

pradeep_slides - Reliability and Representational Bandwidth...

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Reliability and Representational Bandwidth in the Auditory Cortex M. DeWeese, T. Hromadka, A. Zador presenter: Pradeep Shenoy
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Overview Cortex has far more neurons than sensory organs 16k hair cells vs 160M neurons in A1 Why? cortical neurons are “noisy” perform complicated computations extract multiple representations/features integrate extrasensory information, e.g., attention, motivation, task context, etc. 2
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Outline Auditory neurons show “reliable” responses counterexample to the noisy neuron theory (cf. visual cortex) suggests temporal coding a possibility Neural responses affected by non-stimulus inFuences support for “integrative” role of A1 neurons also explains large amount of cortical input into A1 Discuss issues in study of auditory cortex 3
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Spike Count vs Timing 4 Alternative coding schemes not mutually exclusive Reliability ~ evidence for coding scheme and a measure of “noisiness” (not strictly true: this is only stimulus-related reliability)
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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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pradeep_slides - Reliability and Representational Bandwidth...

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