Fig. 8.

The firing process of E-neuron. a The spike transmission from I-neuron to E-neuron. b Two spikes of E-neuron in a discharge period T. The membrane potential of E-neuron is − 65 mV when t is $\mathrm{\Delta }T$, and the membrane potential of E-neuron is − 45 mV when t is $\left(T+\mathrm{\Delta }T\right)$