Figure 7.

Neuronal firing rates with reduced firing capability of inhibitory neuronal groups. Shown are the neuronal firing rates when the maximum firing rate of inhibitory neuron groups (${F_{\mathrm{I}}}^{[\max ]}$) is reduced. Figures (A–D) show the firing rates simulated using four combinations of synaptic gains. The synaptic gain values are shown on the left [unit: uV/(mV · Hz)] and ${F_{\mathrm{I}}}^{[\max ]}$ values are shown on the top of the figures (unit: AP/sec). The number on the right is the firing rate at the middle of the vertical scale bar (unit: AP/sec), and the markers indicate the values of vertical scale bars: •−0.1 AP/sec; +−5 AP/sec; +•−25 AP/sec. The horizontal scale bars represent a 200 millisecond period. Figures (E–G) display the temporal mean firing rates (MFR; (E)), and the mean power spectrum density for firing rates of 2–15 Hz (PSD_L; (F)) and 16–50 Hz (PSD_H; (G)). The synaptic gain values are displayed on the top [unit: uV/(mV · Hz)]. The error bars represent the standard deviation for 10 runs of the LCM with the same parameter values but different random number kernels.