Global sensitivity analysis of the EEG forward problem

When carrying out an EEG experiment for source reconstruction, one has
to provide both accurate geometry and electrical properties of the head
tissues. Authors usually set the electrical conductivities based on values
reported in the literature which have been shown to vary widely.
Here we propose a method to assess the sensitivity of the EEG forward
problem to those parameters using a realistic finite element (FEM) head
model including white matter anisotropic tensor. The chosen sensitivity
descriptor are the first and total order Sobol indices.