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Unformatted text preview: Outline of the Lecture Outline of the Lecture Noise Analysis Noise Analysis Neural Noise Mean & Variance Power Neural Noise Mean & Variance Power Spectrum Spectrum Statistical Properties of Statistical Properties of Neural Noise Reveal Neural Noise Reveal Underlying Unitary Events Underlying Unitary Events The K + channel has one open and four closed states with probabilistic transitions given by α n and β n from the HodgkinHuxley model. Long voltage pulses under K +channel blockade cause fluctuating Na + currents. Singleevent Responses Time (ms) Time (ms) Singleevent Responses σ x 2 = 1 n x i x ( ) 2 i = 1 n å The variance of a random variable x is Where the overbar indicates “mean” and n is the sample size. Opening the square gives σ x 2 = x i 2 i = 1 n å n 2 x x i i = 1 n å n + x 2 = 1 n x i 2 i = 1 n å ae è ç ö ø ÷ x 2 σ...
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This note was uploaded on 06/08/2009 for the course BME 575L taught by Professor Grzywacz during the Spring '09 term at USC.
 Spring '09
 Grzywacz

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