Correlations and Synchrony in Threshold Neuron Models

Details Correlations and Synchrony in Threshold Neuron Models Correlations and Synchrony in Threshold Neuron Models

2008-10-16

arxiv.org/abs/0810.2901v3

Biology

Quantitative Biology

Neurons and Cognition

5 pages, 10 figures

Scientific paper

We study how threshold model neurons transfer temporal and interneuronal input correlations to correlations of spikes. We find that the low common input regime is governed by firing rate dependent spike correlations which are sensitive to the detailed structure of input correlation functions. In the high common input regime the spike correlations are insensitive to the firing rate and exhibit a universal peak shape independent of input correlations. Rate heterogeneous pairs driven by common inputs in general exhibit asymmetric spike correlations. All predictions are confirmed in in vitro experiments with cortical neurons driven by synthesized fluctuating input currents.

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