Handling Anisotropic Conductivities in the EEG Forward Problem with a Symmetric Formulation - IMT Atlantique Accéder directement au contenu
Article Dans Une Revue Physics in Medicine and Biology Année : 2019

Handling Anisotropic Conductivities in the EEG Forward Problem with a Symmetric Formulation

Résumé

The electroencephalography (EEG) forward problem, the computation of the electric potential generated by a known electric current source configuration in the brain, is a key step of EEG source analysis. In this problem, it is often desired to model the anisotropic conductivity profiles of the skull and of the white matter. These profiles, however, cannot be handled by standard surface integral formulations and the use of volume finite elements is required.. Leveraging on the representation theorem using an anisotropic fundamental solution, this paper proposes a modified symmetric formulation for solving the EEG forward problem by a surface integral equation which can take into account anisotropic conductivity profiles. A set of numerical results is presented to corroborate theoretical treatments and to show the impact of the proposed approach on both canonical and real case scenarios.
Fichier principal
Vignette du fichier
1903.11405.pdf (1.36 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03582359 , version 1 (21-02-2022)

Identifiants

Citer

Axelle Pillain, Lyes Rahmouni, Francesco Andriulli. Handling Anisotropic Conductivities in the EEG Forward Problem with a Symmetric Formulation. Physics in Medicine and Biology, 2019, 64, ⟨10.1088/1361-6560/aafaaf⟩. ⟨hal-03582359⟩
14 Consultations
55 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More