Microwave auditory effect

The microwave auditory effect, also known as the microwave hearing effect or the Frey effect, consists of the human perception of sounds induced by pulsed or modulated radio frequencies. The perceived sounds are generated directly inside the human head without the need of any receiving electronic device. The effect was first reported by persons working in the vicinity of radar transponders during World War II. In 1961, the American neuroscientist Allan H. Frey studied this phenomenon and was the first to publish information on the nature of the microwave auditory effect.[1][2] The cause is thought to be thermoelastic expansion of portions of the auditory apparatus,[3] although competing theories explain the results of holographic interferometry tests differently.[4][further explanation needed]

  1. ^ Allan H. Frey (1962). "Human auditory system response to modulated electromagnetic energy". Journal of Applied Physiology. 17 (4): 689–692. doi:10.1152/jappl.1962.17.4.689. PMID 13895081. S2CID 12359057. Archived from the original on March 28, 2020. Retrieved November 23, 2019.
  2. ^ "Allan Frey: A Pioneer of Radiation Research". Slow Digital. December 7, 2017. Archived from the original on November 22, 2019. Retrieved November 23, 2019.
  3. ^ Wagner, Gregory R.; Rest, Kathleen M. (2005). Levy, Barry S. (ed.). Preventing Occupational Disease and Injury. American Public Health Association. ISBN 978-0-87553-043-7.
  4. ^ Holographic Assessment of Microwave Hearing, Science 05 Sep 1980: Vol. 209, Issue 4461, pp. 1144-1145