“…The electrical resistivity values used in the literature show a wide variation, and were based on in vitro or animal measurements. Recently, several studies attempted to estimate in vivo the electrical resistivities of the surrounding and including the brain [23], [26], [47], [89], [109]. Based on in vivo electrical impedance tomography (EIT), our group measured the electrical resistivities of brain, skull, and scalp in six different subjects, using realistic models of the head, and the boundary element method to solve the forward problem [32].…”