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Articles, Behavioral/Systems/Cognitive

The Structure of Large-Scale Synchronized Firing in Primate Retina

Jonathon Shlens, Greg D. Field, Jeffrey L. Gauthier, Martin Greschner, Alexander Sher, Alan M. Litke and E. J. Chichilnisky
Journal of Neuroscience 15 April 2009, 29 (15) 5022-5031; DOI: https://doi.org/10.1523/JNEUROSCI.5187-08.2009
Jonathon Shlens
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Greg D. Field
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Jeffrey L. Gauthier
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Martin Greschner
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Alexander Sher
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Alan M. Litke
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E. J. Chichilnisky
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Abstract

Synchronized firing among neurons has been proposed to constitute an elementary aspect of the neural code in sensory and motor systems. However, it remains unclear how synchronized firing affects the large-scale patterns of activity and redundancy of visual signals in a complete population of neurons. We recorded simultaneously from hundreds of retinal ganglion cells in primate retina, and examined synchronized firing in completely sampled populations of ∼50–100 ON-parasol cells, which form a major projection to the magnocellular layers of the lateral geniculate nucleus. Synchronized firing in pairs of cells was a subset of a much larger pattern of activity that exhibited local, isotropic spatial properties. However, a simple model based solely on interactions between adjacent cells reproduced 99% of the spatial structure and scale of synchronized firing. No more than 20% of the variability in firing of an individual cell was predictable from the activity of its neighbors. These results held both for spontaneous firing and in the presence of independent visual modulation of the firing of each cell. In sum, large-scale synchronized firing in the entire population of ON-parasol cells appears to reflect simple neighbor interactions, rather than a unique visual signal or a highly redundant coding scheme.

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The Journal of Neuroscience: 29 (15)
Journal of Neuroscience
Vol. 29, Issue 15
15 Apr 2009
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The Structure of Large-Scale Synchronized Firing in Primate Retina
Jonathon Shlens, Greg D. Field, Jeffrey L. Gauthier, Martin Greschner, Alexander Sher, Alan M. Litke, E. J. Chichilnisky
Journal of Neuroscience 15 April 2009, 29 (15) 5022-5031; DOI: 10.1523/JNEUROSCI.5187-08.2009

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The Structure of Large-Scale Synchronized Firing in Primate Retina
Jonathon Shlens, Greg D. Field, Jeffrey L. Gauthier, Martin Greschner, Alexander Sher, Alan M. Litke, E. J. Chichilnisky
Journal of Neuroscience 15 April 2009, 29 (15) 5022-5031; DOI: 10.1523/JNEUROSCI.5187-08.2009
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