Spiral breakup in a modified FitzHugh—Nagumo model
نویسندگان
چکیده
In a modified FitzHugh—Nagumo model for excitable tissue a spiral wave is found to break up into an irregular spatial pattern. The main difference between our equations and the standard FitzHugh—Nagumo model is that we use two different time constants: one for the relative refractory period and another for the absolute refractory period. Breakup occurs when the relative refractory period is short. The effect is numerically stable at least for a five-fold decrease in the space integration step.
منابع مشابه
Spiral Breakup in Excitable Tissue due to Lateral Instability
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