INFLUENCE OF THE DISTANCE ON THE INTERACTION BETWEEN AN AUTONOMOUS PACEMAKER AND A REENTRY

An experimental reentry was generated in a two-dimensional array of el ectronic cells to study the influence of the distance on the interacti on between that reentry and an external and autonomous pacemaker. For long distances (d greater than or equal to 2/3 lambda, where lambda is the reentry wavelength), the pacemaker is only able to modify the rhy thm of the medium for periods faster than the reentry period. For shor ter distances (d<2/3 lambda)I the pacemaker is able to modify the rhyt hm of the medium even for periods slower than the reentry period, givi ng rise to complex sequences of multiperiod output waves when both pac emakers are close enough.