Numerical Simulation and Analysis of the Effect of Individual Differences on the Field Distribution in Human Brain Illuminated by Electromagnetic Pulse

To investigate the effect of individual differences on the field distribution in human brain illuminated by electromagnetic pulse (EMP), the process of the brain illuminated by EMP at the frequency range of 0-0.5GHz is simulated. The dielectric parameters of SAM and structural parameters of spherical brain are adjusted. The field distribution along the Z direction (human posterior brain to forebrain) in the brain is emphatically analyzed. The results point out that the variations of brain tissue dielectric parameters and head size cause relatively distinct changes in the intracerebral field distribution, while the brain shell dielectric parameters and shell thickness do not significantly change the field distribution for the same external EMP.