dorsal/arxiv
View SchemaHigh conductance states in a mean field cortical network model
| Authors | Alexander Lerchner, Mandana Ahmadi, John Hertz |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0402026 |
| URL | https://arxiv.org/abs/q-bio/0402026 |
Abstract
Measured responses from visual cortical neurons show that spike times tend to be correlated rather than exactly Poisson distributed. Fano factors vary and are usually greater than 1 due to the tendency of spikes being clustered into bursts. We show that this behavior emerges naturally in a balanced cortical network model with random connectivity and conductance-based synapses. We employ mean field theory with correctly colored noise to describe temporal correlations in the neuronal activity. Our results illuminate the connection between two independent experimental findings: high conductance states of cortical neurons in their natural environment, and variable non-Poissonian spike statistics with Fano factors greater than 1.
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"abstract": "Measured responses from visual cortical neurons show that spike times tend to\nbe correlated rather than exactly Poisson distributed. Fano factors vary and\nare usually greater than 1 due to the tendency of spikes being clustered into\nbursts. We show that this behavior emerges naturally in a balanced cortical\nnetwork model with random connectivity and conductance-based synapses. We\nemploy mean field theory with correctly colored noise to describe temporal\ncorrelations in the neuronal activity. Our results illuminate the connection\nbetween two independent experimental findings: high conductance states of\ncortical neurons in their natural environment, and variable non-Poissonian\nspike statistics with Fano factors greater than 1.",
"arxiv_id": "q-bio/0402026",
"authors": [
"Alexander Lerchner",
"Mandana Ahmadi",
"John Hertz"
],
"categories": [
"q-bio.NC"
],
"title": "High conductance states in a mean field cortical network model",
"url": "https://arxiv.org/abs/q-bio/0402026"
},
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"type": "Model",
"variant": "snapshot-2026-03-01",
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