Transmissibility of microwaves to ELF waves compatible to brain rhythms

Brain function can be affected by electromagnetic waves having very long wave length if the frequency is kept very low. There is no known means of shielding such disturbances that happen to coincide with the frequency range of the brain waves.The quality of wave transmissibility determines the sustainability the threshold and the time span of waveform lock-on. A postulate is proposed for assessing the permanent set and lock-on time.A transmissibility constant b is defined in accordance with the surface energy density SEDELF related to the extreme low frequency (ELF) waves. The SEDELF for the gamma, beta, alpha, theta and delta waves at their average frequencies is found to dwell in a very narrow band for microwave frequency in the range of 1000–2400 MHz. The band width is negligibly small up to 1800 MHz, after which the SEDELF increased only 15 mW/cm2 at 2400 MHz. Approximately the same SEDELF for all the five brain waves can be used at each microwave frequency within the range mentioned earlier. The transmissibility constant b varied from 2.2 × 10−16 to 5.0 × 10−21 mW(μV)2/cm2. The five orders of magnitude change in b is indicative of its capability to cover an extremely wide range of transmission of thousands of MHz to a few Hz. Brain waves are most vulnerable to artificial alterations in the range of 6–10 Hz. This work explores the quality of wave transmissibility by using ELG and EEG (electroencephalography) data on brain waves.