A model of the electric field of the brain at EEG and microwave frequencies.

A simple calculation of the current dipole moment of the extracellular electric field of the cortex is proposed; it is based on the dipole layer model. The model is extended to the range of microwave frequencies. Arguments in favor of emission of microwave radiation by the dendritic membranes of pyramidal neurons are presented and the strength of the radiative electric field at a distance from the head is calculated and discussed.