  It had been shown that the transition from a rigidly rotating spiral wave to
a meandering spiral wave is via a Hopf bifurcation. Many studies have shown
that these bifurcations are supercritical, but we present numerical studies
which show that subcritical bifurcations are also present within
FitzHugh-Nagumo. Furthermore, we present a evidence that this bifurcation is
highly sensitive to initial conditions, and it is possible to convert one
solution in the hysteresis loop to the other.
