Fig. 9.

The critical manifold calculated for $g_{\mathrm{FO}}=9.6{\text{mS/cm}}^2$ and $g_{\mathrm{SI}}=0.7842{\text{mS/cm}}^2$ projected onto ($h_{\mathrm{SI}},m_{\mathrm{SO}},V$)-space. Superimposed in the left and right column are orbit segments with $g_{\mathrm{SI}}\approx 0.7842$ selected from the falling and rising slopes of the downward peak, respectively. Panels (a) and (b) show an overall view, and panels (c) and (d) are enlargements near $F_1$ and $F_2$ along with the associated slow flow. The two unstable equilibria $s_1$ and $s_2$ of the full system are marked with black and red dots because they are an attractor and a saddle on $S_1^r$, respectively.