PS_CentralPathways_2 - Quantitative characterization of...

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1 Quantitative characterization of cortical cell response properties using moving (drifting) sine wave gratings.
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2 Sine Wave Grating Stimuli Sine wave grating patterns at five different contrasts. Sometimes contrast is also expressed in percent rather than proportion. Sine wave stimuli are useful for studying sensory systems. If a neural or mechanical system can be described in terms of addition and subtraction, then measuring the responses using sine wave stimuli can be used to predict the responses to arbitrary stimuli.
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3 Tuning characteristics of cortical neurons measured with sine wave grating stimuli. This is the quantitative version of experiments performed by Hubel and Wiesel. Notice that each neuron is tuned along multiple dimensions and the variability of a neuron’s response increases with its response rate. What are the consequences of these receptive field properties?
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4 Relationship between contrast response function measured with fMRI in humans and the average contrast response function of single neurons measured in primary
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This note was uploaded on 08/12/2008 for the course PSY 323P taught by Professor Geisler during the Spring '08 term at University of Texas at Austin.

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PS_CentralPathways_2 - Quantitative characterization of...

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