The Trans-Derma-Phone - A Research Device for the Investigation of Radio-Frequency Sound Stimulation
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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Electrophonic hearing, stimulated by the passing of an audio- frequency current through various electrodes attached to the body, has previously been studied. More recently, transdermal stimulation, a means of electromagnetic excitation utilizing an amplitude-modulated radio-frequency stimulus applied through insulated electrodes, has received attention. Claims of sound transmission directly to the brain via this method have prompted several research efforts. Although most of the results tend to disprove the claims, they have not been conclusive. Further investigation of the transdermal mechanism is warranted. The purpose of this work is to design and construct a device especially for research of transdermal hearing. The TRANS-DERMA-PHONE, an amplitude-modulated, 100 kHz transmitter, is the end product of this endeavor. A complete description of this apparatus is presented in this paper, as well as an introduction to the phenomenon known as transdermal stimulation.
- Anatomy and Physiology