Influence of Head Tissue Conductivity Anisotropy on Human EEG and MEG using Fast High Resolution Finite Element Modeling, based on a Parallel Algebraic Multigrid Solver Carsten H. Wolters Alfred Anwander Martin A. Koch Stefan Reitzinger Michael Kuhn Markus Svens´ en 1) Max Planck Institute for Mathematics in the Sciences, Leipzig, Germany, http://www.mis.mpg.de 2) Max Planck Institute of Cognitive Neuroscience, Leipzig, Germany, http://www.cns.mpg.de 3) Universit¨ atsklinikum Hamburg-Eppendorf, Neurologische Klinik, Hamburg, Germany 4) Institute for Comp. Math., J. Kepler Univ., Linz, Austria, http://www.numa.uni-linz.ac.at 5) Bruker Saxonia Analytik GmbH, Leipzig, Germany. 1