Portal de Periódicos da CAPES

Validation of a detailed computer model for the electric fields in the brain

1995; Taylor & Francis; Volume: 19; Issue: 2-3 Linguagem: Inglês

10.3109/03091909509030281

1464-522X

P. Laarne, Hannu Eskola, Jari Hyttinen, V. Suihko, Jaakko Malmivuo,

Optical Imaging and Spectroscopy Techniques

A computer model has been designed for the calculation of the electrical fields in the head, based on the finite difference method. This method has not previously been applied for head modelling. The model was validated by using three concentric spheres and comparing it with an analytic model. Three levels of accuracy were tested. The forward solutions show that the finite difference algorithm works correctly and, by selecting the size of the volume elements properly, accurate results are obtained. The model will be applied to accurate and realistic geometries of the human head obtained from magnetic resonance images.