Abstract：
:An original numerical method is developed to compute the 3D electric potential generated by a dot-contact cuff electrode implanted around an axisymmetrical, inhomogeneous, anisotropic nerve. The technique is based on a 2D finite-element approach coupled with a semi-analytical Fourier spectral decomposition to approximate the solution behaviour in the azymuthal direction. The method only requires a 2D FEM mesh and allows an accurate electrode description, with any number of contacts at different angular positions. Results show that the convergence of the Fourier series is very fast: typically, the relative error due to series truncation (estimated by the norm of the difference between the solution computed with M modes and the one computed with M-1 modes, normalised by the norm of the solution computed with M modes) reaches the order of 10(-3) with six spectral modes (M = 6). As a consequence, the whole algorithm has the complexity of a 2D approach.
journal_name
Med Biol Eng Computjournal_title
Medical & biological engineering & computingauthors
Parrini S,Delbeke J,Romero E,Legat V,Veraart Cdoi
10.1007/BF02513375keywords:
subject
Has Abstractpub_date
1999-11-01 00:00:00pages
733-6issue
6eissn
0140-0118issn
1741-0444journal_volume
37pub_type
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