Figure 2.

Effect of heterogeneity on the stationary firing rates. (A) Probability density function of individual mean firing rates of excitatory neurons, for w_E = 0.1 mV (light red) and w_E = 2 mV (dark red). One can observe the spread of firing rate values as a consequence of the increase in the excitatory heterogeneity. (B) Distribution of individual mean firing rates of inhibitory neurons, for w_I = 0.1 mV (light blue) and w_I = 2 mV (dark blue). (C) Effect of the excitatory heterogeneity on the network mean firing rate. Solid lines correspond to the mean-field solution, while symbols are the results from numerical simulations. Here and in the following, error bars (which may be within symbol size) denote standard deviation over trials. (D) Same as in (C), but for the effect of inhibitory heterogeneity. We set a fixed value w_I = 0.1 mV for (A,C), and w_E = 0.1 mV for (B,D). For all panels, the external input is determined by μ = μ₀ = 15 mV. Note the different scale for the vertical axis in (C,D).