Fig. 9.

(a) Predominant silence-active coefficient (N) and (b) coefficient of variation of inter-spike intervals for $D=7.5·{10}^{-7}$ Hz M${\mathrm{\Omega }}^{-2}$. The values of N and CV are calculated for a time duration equal to ${10}^6$ s. The initial conditions are given by $U=-7$ mV and $\dot{U}=0$