Study on Effect of Very High Frequency Vadiation(VHF) on Nerve System Function

ObjectiveTo investigate the effect of VHF radiation(VHF,170MHz)on nerve system function of profressionals in occupational environment.MethodsTo measure the intensity of VHF and other environmental factors on the spot, to hold the questionnaire about chief complaints,to examine the Rheoencephalography and the Neurobehavior function between the experimental group and the control group.ResultsOn-the-spot exposed to a VHF electric field with the intensity higher than 134dB,on 20m to 0° and 10M to 135° and with a high-noise and low-illumination in working environment.The chief complaints showed that the percentage of symptoms such as headache,insomnia and amnesia etc.was significantly higher in professionals(P<0.01).Rheoencephalography indicated that the raising time of both left and right sides was significantly longer in experimental group after exposure than before exposure or in the control(P<0.01).Neurobhavioir funcrction Test showed that the three indices of Digital Symbol,Digital Span and Pursuit Aiming Test were decreased after exposure in the experimental group(P<0.01).ConclusionLow-intensity VHF radiation can significantly decrease the nerval system function in professionals.