Composite Synthesized Relaxation Oscillators: Application to Modeling of Colonic Electrical Control and Response Activity

Berj L. Bardakjian, Sushil K. Sarna, Nicholas E. Diamant

Research output: Contribution to journalArticle


A composite synthesized relaxation oscillator (SRO), whose output exhibits two types of interrelated rhythmic activities, is proposed. A slow rhythmic activity is present at all times, and it controls the appearance of a faster bursting activity that is not always present. The second‐order SRO dynamics for producing omnipresent and labile rhythmic activities are generalized as fourth‐order composite SRO dynamics for producing a composite rhythmic activity. To illustrate the relevance of this composite SRO to gastrointestinal electrical activities, a population of coupled SROs, which has been previously used to model colonic electrical control activity, is generalized to represent a population of coupled composite SROs to model both electrical control and response activities in the colon.

Original languageEnglish (US)
Pages (from-to)109-116
Number of pages8
JournalNeurogastroenterology and Motility
Issue number2
StatePublished - 1990
Externally publishedYes



  • composite rhythms
  • computer model of colonic ECA and ERA.
  • electrical control activity
  • electrical response activity
  • interrelated rhythmic activities
  • relaxation oscillators

ASJC Scopus subject areas

  • Physiology
  • Endocrine and Autonomic Systems
  • Gastroenterology

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