Every American Needs to know what the “Frey Effect” is and what CAUSES it.
Frey, A. H. (1962). Human auditory system response to modulated electromagnetic energy. Journal of Applied Physiology, 17(4), 689–692.
a. Thermoelastic Expansion: When pulsed RF energy hits the human head, it causes a minuscule but rapid heating of the brain tissue (in the range of millionths of a degree).
b. Internal Shockwave: This rapid heating causes the tissue to expand, generating a pressure wave inside the skull. This wave travels to the cochlea (inner ear), where it is processed as sound.
c. Vestibular Overload: As described in James C. Lin’s comprehensive 2021 review, Auditory Effects of Microwave Radiation, this effect can be tuned. A specific pulse repetition rate could not only create phantom noise but also overstimulate the vestibular system.