This could be a perfectly stable situation as long as the pacing rate is constant and each orthodromic wavefront propagates all the way along the reentrant circuit. In this situation, if the ...

This movie gives an overview of the phase behavior observed in simulations of self-propelled spheres equipped with Lennard-Jones interactions and confined to a 2D surface.

The relative pause that follows is less than fully compensatory. The same can occur in reentrant rhythms (Fig. 1, bottom panel). The consequence is that "the clock of the rhythm" has changed ...