The fast multipole method for the direct E/MEG problem
Typ dokumentupříspěvek z konference - tištěný
Práva© 2002 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
MetadataZobrazit celý záznam
Reconstructing neuronal activity from MEG and EEG measurements requires the accurate calculation of the electromagnetic field inside the head. The boundary element formulation of this problem leads to a dense linear system which is too large to be solved directly. We propose to accelerate the computations via the fast multipole method. This method approximates the electromagnetic interaction between surface elements by performing multipole expansions at a coarse resolution. It significantly reduces the computational complexity of the matrix-vector products needed for the iterative solution of the linear system, and avoids the storage of its matrix. We describe the single-level fast multipole method and present several experiments demonstrating its accuracy and performance.
K tomuto záznamu jsou přiřazeny následující licenční soubory: