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. 2007 Nov 2;1:8. doi: 10.3389/neuro.10.008.2007

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Copyright: © 2007 Pfeuty, Golomb, Mato and Hansel.

This is an open-access article subject to an exclusive license agreement between the authors and the Frontiers Research Foundation, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.

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The state of the network as a function of the average firing rate of the neurons and the inhibitory conductance. Population activity oscillations are found in the colored region only. In the white region, the asynchronous state is stable. In the two panels, σ = 0.5 μA × ms^1/2/cm². (A) Phase diagram when g_gap = 0. The network displays synchronous activity with a frequency of population oscillations in the γ range only when the average firing rate of the neurons is larger than 35 Hz. (B) Phase diagram in the presence of dendritic electrical synapses. The domain of oscillations extends up to the low activity region.