Frequency Coupling Model for Dynamics of Responses to Stimuli in Plasmodium of Physarum Polycephalum

Atsuko Takamatsu, Kengo Takahashi, Makoto Nagao, Yoshimi Tsuchiya

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Gathering or escaping behavior in the plasmodium of Physarum polycephalum is considered to relate to an entrainment of the coupled nonlinear oscillators. The behavior has been explained to be caused by the formation of phase gradient between those oscillators, which results from the local frequency modulation at the stimulated site. However, it has not yet been elucidated how the formation process relates to the migration of the plasmodium. In this paper, we have introduced a model with frequency coupling besides the phase coupling in the system of coupled oscillators. By the simulation, we have shown that not only the phase gradient but also the concentration gradient of substances such as Ca2+ and ATP are self-organized and their reverse by the stimulus results in the migration of plasmodium.

Original languageEnglish
Pages (from-to)1638-1646
Number of pages9
JournalJournal of the Physical Society of Japan
Volume66
Issue number6
Publication statusPublished - 1997 Jun
Externally publishedYes

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Keywords

  • Coupled nonlinear oscillator
  • Physarum
  • Self-organization of concentration gradient

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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