Study type: other

J. Appl. Physiol. · 1962 · Manual

The paper reports that modulated RF electromagnetic energy induced perception of sounds in normal and deaf humans at distances of several hundred feet from the antenna when the transmitter was turned on. The effect depended on carrier frequency, modulation, and peak power density; under approximately 80 dB acoustic noise, a peak power density of about 275 mW/cm2 was needed at carrier frequencies of 425 and 1,310 MHz, while average power density could be as low as 400 pW/cm2.

Study URL: https://mriquestions.com/uploads/3/4/5/7/34572113/auditory_frey_rf_hearing_jappl.1962.17.4.689.pdf

Study type: other

J Appl Physiol · 1962 · Manual

Using low average power densities of electromagnetic energy, perception of sounds was induced in normal and deaf humans. The effect occurred immediately when the transmitter was turned on at distances of several hundred feet from the antenna and depended on carrier frequency and modulation. With ~80 dB acoustic noise, a peak power density of ~275 mW/cm^2 was reported as needed to induce perception at carrier frequencies of 425 and 1,310 mc, while average power density could be as low as 400 μW/cm^2; peripheral locations to the cochlea were reported as ruled out as sensor sites.

DOI: 10.1152/jappl.1962.17.4.689 · PMID: 13895081

Study URL: https://pubmed.ncbi.nlm.nih.gov/13895081/