Title :
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
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;
Conference_Titel :
Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE
Print_ISBN :
0-7803-7789-3
DOI :
10.1109/IEMBS.2003.1280489
