Numerical Modeling of Bioelectromagnetic Fields

Abstract

The common way of measuring electrical activities of the human brain due to
body functions is to place electrodes on the scalp (EEG) and with magnetic
sensors (MEG) placed near the scalp surface. The representation of electrical
activity of the brain using electrical and magnetic measurements is called
electromagnetic source localization. The quantitative interpretation of
electroencephalograms (EEGs) and magnetoencephalograms (MEGs) in terms of
the underlying brain activity, and mathematical models are used to describe both
the source of this activity and the head as a volume conductor. If the source and
the surrounding conductivity distribution are known, electric potential and the
magnetic field can be calculated from Maxwell’s equations.