Fig. 15.

Minimum coefficient of variation ${\mathrm{CV}}_{\min }$ for the motif ${\mathcal{C}}_3$ against: a electrical autaptic parameters $({\kappa }_e^a,{\tau }_e^a)$ and b excitatory chemical autaptic parameters $({\kappa }_{\mathrm{c},\mathrm{exc}}^a,{\tau }_{\mathrm{c},\mathrm{exc}}^a)$. There is an enhancement in the degree of SISR from ${\mathrm{CV}}_{\min }=0.232$ in the absence of autapses to ${\mathrm{CV}}_{\min }\approx 0.09$ and ${\mathrm{CV}}_{\min }\approx 0.06$ in a and b, respectively, in the presence of autapses. ${\kappa }_{\mathrm{c},\mathrm{inh}}=1.5$, ${\tau }_{\mathrm{c},\mathrm{inh}}=10.0$, $v_l=1.515<v_{\mathbb{H}}$, $\epsilon =0.0005$