Abstract
We study some effects of spatial inhomogeneity and external forcing on spiral waves in the FitzHugh-Nagumo equation and attempt in a numerical investigation to eliminate spiral patterns using "entrainment" and "trapping". We find that a target pattern generated by circular fast pacemaker region can overwhelm a spiral pattern and eliminate spiral waves. We also find that a spiral pattern can be trapped in a less excitable region. Through control of this less excitable region, a pair of spirals can be annihilated. In addition, it is shown that spiral waves are entrained and disappear under a spatially uniform periodic forcing if the forcing is sufficiently strong. We discuss two mechanisms causing complete entrainment.
| Original language | English |
|---|---|
| Pages (from-to) | 241-252 |
| Number of pages | 12 |
| Journal | Progress of Theoretical Physics |
| Volume | 108 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Aug 1 2002 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)