Figure 11. Phase lag maps near a saddle-node bifurcation for an asymmetric motif.

(A) Phase lag map for the short duty cycle motif and coupling asymmetry : the three saddles surrounding the stable FP , are about to merge and vanish with other three stable FPs through simultaneous saddle-node bifurcations; the FP at remains unstable. (B) For the FP becomes the only attractor of the map, which corresponds to the only robust traveling wave. The network motif is inset, where darker connections are stronger.