Composite synthesized relaxation oscillators: Application to modeling of colonic electrical control and response activity

B. L. Bardakjian, S. K. Sarna, N. E. Diamant

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

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 thythmic 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
JournalJournal of Gastrointestinal Motility
Volume2
Issue number2
StatePublished - Jan 1 1990

Keywords

  • 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
  • Gastroenterology

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