Simulation of the electric-control activity of the stomach by an array of relaxation oscillators

S. K. Sarna, E. E. Daniel, Y. J. Kingma

Research output: Contribution to journalArticle

88 Scopus citations

Abstract

An array of bidirectionally coupled relaxation oscillators is proposed as a model of gastric electric-control activity. The characteristics of relaxation oscillators simulating control activity, such as intact and intrinsic frequency gradients and phase-lag patterns, were studied in anesthetized dogs. A marked intrinsic frequency gradient was found along the axis of the stomach, and a slight intrinsic frequency gradient around the circumference. The phase lag/cm decreased distally from the body of the stomach to the antrum. The model showed all these characteristics. Each oscillator in the array was represented by a system of two first-order nonlinear differential equations. The model was programmed on analog and hybrid computers.

Original languageEnglish (US)
Pages (from-to)299-310
Number of pages12
JournalThe American Journal of Digestive Diseases
Volume17
Issue number4
DOIs
StatePublished - Apr 1 1972

ASJC Scopus subject areas

  • Gastroenterology

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