Fig. 4.

Construction of solutions of Eq. 18 for equal firing thresholds Θ_e = Θ_i = Θ and different constants c_e, c_i. The panels show the left hand side (thin dashed diagonal) and the right hand side (thick solid lines) of (18) for three parameters p₁ < p₂ < p₃. The crossing points of the dashed line and the solid line give the stationary solutions (a) illustrates the case c_e < c_i, (b) c_e = c_i, (c) c_e > c_i and (d) c_e ≫ c_i