Forward and Inverse Methods in Event Related Potential Imaging Using a Resistor Mesh Model

Abstract

A spherical head model based on a resistor mesh is presented. Each resistor corresponds to the conducting electrical properties of a tissue volume. A current dipole is simulated by an electrical current source connected between two nodes in this mesh. The direct problem is solved and the accuracy of this model is evaluated in comparison with the analytical solution. The results show that the resistor mesh provides correct potential and scalp current density values. The model structure makes it easy to introduce conductivity heterogeneities such as stroke and skull anisotropy. First trials of an inverse method are also presented.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA410154

Entities

People

  • B. Doyon
  • B. Rigaud
  • J. P. Morucci
  • N. Chauveau
  • X. Franceries

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Anisotropy
  • Conductivity
  • Current Density
  • Electrical Impedance
  • Electrical Properties
  • Electrical Resistance
  • Electricity
  • Engineering
  • Heterogeneity
  • Physical Properties
  • Resistors

Readers

  • Computational Fluid Dynamics (CFD)
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Thin Film Deposition Science.