glow discharge generated when the skin is subjected to trains of triangular electric pulses . These properties are modified when the skin is exposed to EMF generated by computer screens . Materials able to shield EMF from VDU and 50-60 Hz are at hand : these frequencies are the most likely to be perceived as skin damaging , and these materials are advantageously used in skin care products claiming the capability to shield these EMFs . After topical application of creams able to shield or dampen the intensity of electromagnetic radiation , the electric properties of the surface of the skin are less prone to undergo the modifications induced by the exposure to electromagnetic fields .
Principles of the experimentation GDV Technique allows the monitoring of individual reactions to different treatments [ 11,12,13 ]. The experiments was performed with healthy volunteers from 18 to 40 years old . Control measurements ( before exposure to EMF ) were taken when subjects had remained in a computer-free environment for at least 20 minutes . The computer monitor used for measuring changes in GDV was a standard electron-beam tube computer monitor with 17 ’’ screen . Control measurements with computer turned on and off without turn on the monitor demonstrated that the GDV signal was constant for volunteers not exposed to EMF .
The Gas Discharge Visualization Measurements of individual reaction to EMF have been performed using Gas Discharge Visualization ( GDV ) technique [ 11 ], which generate images of the air gap around the skin during the glow discharge consequent to the stimulation of the skin with a train of triangular electrical pulses . The electric field initiates electron-ion avalanches , which result in a gas discharge along the dielectric surface . The spatial distribution of discharge channels can
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glow discharge generated when the skin is subjected to trains of triangular electric pulses . These properties are modified when the skin is exposed to EMF generated by computer screens . Materials able to shield EMF from VDU and 50-60 Hz are at hand : these frequencies are the most likely to be perceived as skin damaging , and these materials are advantageously used in skin care products claiming the capability to shield these EMFs . After topical application of creams able to shield or dampen the intensity of electromagnetic radiation , the electric properties of the surface of the skin are less prone to undergo the modifications induced by the exposure to electromagnetic fields .
MATERIALS AND METHODS
Principles of the experimentation GDV Technique allows the monitoring of individual reactions to different treatments [ 11,12,13 ]. The experiments was performed with healthy volunteers from 18 to 40 years old . Control measurements ( before exposure to EMF ) were taken when subjects had remained in a computer-free environment for at least 20 minutes . The computer monitor used for measuring changes in GDV was a standard electron-beam tube computer monitor with 17 ’’ screen . Control measurements with computer turned on and off without turn on the monitor demonstrated that the GDV signal was constant for volunteers not exposed to EMF .
The Gas Discharge Visualization Measurements of individual reaction to EMF have been performed using Gas Discharge Visualization ( GDV ) technique [ 11 ], which generate images of the air gap around the skin during the glow discharge consequent to the stimulation of the skin with a train of triangular electrical pulses . The electric field initiates electron-ion avalanches , which result in a gas discharge along the dielectric surface . The spatial distribution of discharge channels can