Spiral competition in three-component excitable media

Igor Aranson, Herbert Levine, Lev Tsimring

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Excitable wave patterns consisting of large coherent spirals are observed during the aggregation of Dictyostelium amoebae. These emerge from an initially disordered state which arises via random cell firing. In this work, we show that this phenomenon can be understood as being due to a specific spiral competition instability which occurs in certain three-component excitable medium models. This instability can be understood as symmetry breaking of a spiral pair leading to one spiral suppressing and expelling another.

Original languageEnglish (US)
Pages (from-to)1170-1173
Number of pages4
JournalPhysical Review Letters
Issue number7
StatePublished - Jan 1 1996


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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