We propose an approach and the numerical algorithm for pre-processing of the electroencephalography (EEG) data, enabling to generate an accurate mapping of the potential from the measurement area - scalp - to the brain surface. The algorithm based on the solution of ill-posed Cauchy problem for the Laplace's equation using tetrahedral finite elements linear approximation. Application of the proposed algorithm sufficiently increases the spatial resolution of the EEG technique, making it comparable with much more complicated electrocorticography (ECoG) method.
@article{arxiv.1907.01504,
title = {FEM-based Scalp-to-Cortex data mapping via the solution of the Cauchy problem},
author = {Nikolay Koshev and Nikolay Yavich and Mikhail Malovichko and Ekaterina Skidchenko and Maxim Fedorov},
journal= {arXiv preprint arXiv:1907.01504},
year = {2019}
}