Noise correlations improve response fidelity and stimulus encoding

Jon Cafaro and Fred Rieke ()
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Jon Cafaro: University of Washington
Fred Rieke: Howard Hughes Medical Institute. University of Washington

Nature, 2010, vol. 468, issue 7326, 964-967

Abstract: Neural activity in the balance The encoding of physical stimuli by the nervous system is thought to depend on the correlation between various input signals, but this theory has rarely been empirically tested. Jon Cafaro and Fred Rieke introduce a novel recording technique for simultaneously measuring excitatory and inhibitory conductances of retinal ganglion cells, and show that excitatory and inhibitory inputs are strongly correlated, thereby cancelling each other out. On reintroducing these conductance changes into the cell with or without correlations, they find that, as predicted by theoretical work, correlations significantly increase the reliability of the spiking response.

Date: 2010
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DOI: 10.1038/nature09570

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