The paper examines electrophysiological activity produced by exposing the brains
of laboratory animals to rectangular pulses of microwave energy. These results
suggest that a microwave auditory phenomenon is evoked by a mechanism similar to
conventional sound reception, and that the primary interaction site is peripheral to
the cochlea. It is shown that the peak pressure due to thermal expansion is greater
than the radiation pressure or electrostriction, and that the induced sound frequency
is only a function of the size and acoustic property of the brain. Several
suggestions were made for future research in microwave auditory effect and its health
implications.