Fig. 14

An example of a headless torus canard orbit in the WCI model (Equations 9a-9c) at $(k,r_x)=(0.7575,-4.76)$. (a) Time series of the fast V variable. (b) The trajectory is plotted in projection onto the $(u,x)$ phase space, along with the bifurcation diagram of the fast system at this value of $r_x$. Plotting conventions follow Figure 13. The inset shows the Poincaré map of the torus canard trajectory near SNp, with the Poincaré surface Σ chosen so that the iterates correspond to local extrema in x of the trajectory.