Fig. 17

Solutions to (72) and (73) with initial conditions \(S^{\mathrm{I}}(0)=[0.2, 0.25, 0.05, 0.1]^{\mathrm{T}}\), \(S^{\mathrm{I}}(0)=[ 0.3, 0.45, 0.4, 0.2]^{\mathrm{T}}\), \(\dot{S}^{\mathrm{E}}(0)=[0.5, 0.5, 0.5, 0.5]^{\mathrm{T}}\), \(\dot{S}^{\mathrm{I}}(0)=[0.5, 0.5, 0.5, 0.5]^{\mathrm{T}}\) for \(L^{\mathrm{E}}=\operatorname {diag}[1 ,0.9 , 0.85 , 0.8]\), \(L^{\mathrm{I}}=\operatorname {diag}[1.1 , 1.2 , 1.3 , 1.25]\), and \(f_{\max}=0.5\). The synaptic drive of the excitatory neurons \(\mathrm{E}_{1}\) to \(\mathrm{E}_{4}\) do not converge to zero