A model of the electrical activity of the stomach: from cell to body surface

Author

Cheng, L.K. ; Buist, M.L. ; Yassi, R.S. ; Richards, W.O. ; Bradshaw, L.A. ; Pullan, A.J.

Author_Institution

Bioeng. Inst., Auckland Univ., New Zealand

Volume

3

fYear

2003

fDate

17-21 Sept. 2003

Firstpage

2761

Abstract

The electrical activation of the smooth muscle in the walls of the gastrointestinal tract gives rise to attenuated electrical and magnetic fields which can be measured on the torso surface. We present here a computational model of the stomach and torso which can simulate the electrical activity occurring within the stomach and the resultant electric and magnetic fields external to the torso. The stomach model is comprised of a dense embedded finite element network representing continuum cells while a coarser boundary element model is used to describe the skeletal muscle, subcutaneous fat and skin surface layers within the torso.

Keywords

bioelectric phenomena; biology computing; biomagnetism; boundary-elements methods; cellular biophysics; muscle; physiological models; skin; attenuated electrical field; attenuated magnetic field; body surface; boundary element model; electrical activity; finite element network; gastrointestinal tract; skeletal muscle; skin surface layers; smooth muscle; stomach model; subcutaneous fat; torso surface; Attenuation measurement; Computational modeling; Electric variables measurement; Finite element methods; Gastrointestinal tract; Magnetic field measurement; Muscles; Skin; Stomach; Torso;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7789-3

Type

conf

DOI

10.1109/IEMBS.2003.1280489

Filename

1280489