A theory for self-sustained balanced states in absence of strong external currents
Fig 5
DMF characterization of the chaotic regime.
(A) Time traces of firing rates (orange) and
(blue) for a subset of neurons in a network of size
at J0 = 1.5 and I0 = 0. The inset shows the time traces of the synaptic efficacies for the same excitatory neurons of the main panel. (B) Distribution of total input currents
across neurons (main panel) for excitatory (orange) and inhibitory (blue) populations. The inset shows the corresponding firing rate distributions
. (C) Autocorrelation function (ACF) of the total input currents for excitatory and inhibitory populations. Solid lines correspond to DMF predictions and symbols to direct simulations. The inset illustrates a fit of the ACF with the function
(black dashed lines). (D) Average firing rates, (E) Total input currents, (F) Input variances and (G) Decorrelation times as a function of J0 for different values of the external current I0 (color-coded). In panels (D-G) inhibitory (excitatory) populations are depicted with solid (dashed) lines.