Dynamical Excitation Intervals: Diversity and Localisations
Back in 1998 , we introduced an excitable cellular automaton,where a resting cell is excited if a number of its excited neighbours belong to a fixed interval [θ 1,θ 2]. The interval [θ 1,θ 2] is called an excitation interval. For two-dimensional cellular automaton with eight-cell neighbourhood 1 ≤ θ 1 ≤ θ 2 ≤ 8. We found that by tuning θ 1 and θ 2 we can persuade the automaton to imitate almost all kinds of excitation dynamics, from classical target and spiral waves observed in physical and chemical excitable media to wave-fragments inhabiting sub-excitable media .
KeywordsMorphological Diversity Shannon Entropy Excitable Medium Spiral Wave Interval Boundary
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