Figure 2.

(a) Orbits in the phase plane for $\alpha =0.1$ and α = 10 starting at $(u,v)=(2.5,0)$. Both orbits converge toward the unique steady state $(u,v)=(1,1)$ but, depending on α, along very different routes (MATLAB model code provided in Supplementary Figure S2). (b) Graphs of the functions $u(\tau )$ (in red) and $v(\tau )$ (in blue) which solve Eqs. 13 and 14 for α = 10.