Traveling waves in the discrete fast buffered bistable system

Je Chiang Tsai*, James Sneyd

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We study the existence and uniqueness of traveling wave solutions of the discrete buffered bistable equation. Buffered excitable systems are used to model, among other things, the propagation of waves of increased calcium concentration, and discrete models are often used to describe the propagation of such waves across multiple cells. We derive necessary conditions for the existence of waves, and, under some restrictive technical assumptions, we derive sufficient conditions. When the wave exists it is unique and stable.

Original languageEnglish
Pages (from-to)605-652
Number of pages48
JournalJournal of Mathematical Biology
Issue number5-6
Publication statusPublished - 2007 Nov
Externally publishedYes


  • Bistable
  • Buffer
  • Calcium
  • Traveling wave

ASJC Scopus subject areas

  • Modelling and Simulation
  • Agricultural and Biological Sciences (miscellaneous)
  • Applied Mathematics


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