309572.fig.003a
(a)
309572.fig.003b
(b)
Figure 3: Phase diagrams illustrating symmetric homoclinic bifurcation. Diagram on right ( 𝑁 = 3 . 0 1 0 ) includes the period-2 attractor basins for the two limit cycles prior to the bifurcation. Diagram at left ( 𝑁 = 3 . 0 1 1 ) shows the attractor formed from the merging limit cycles and resulting loss of local attractor basin structure.