Signals of electric muscle activity as markers of the effect of low-intensity electromagnetic emissions (method and experimental results)

We present the method and describe results of an experimental study of electromyographic (EMG) changes under the influence of low-intensity electromagnetic transmitters (EMT). To study the EMT effect on humans, we propose a method based on special processing of EMG signals. The method is based on spectral statistical analysis of the low-frequency envelope signal extracted from the EMG. We have studied specifically selected user groups for personal computers (PC), mobile phones (MP), a group of PC and MP users, and a control group. We have obtained statistically significant differences in structural changes of the physiological tremor spectrum and the values of the spectral peak frequency that determines the base tremor frequency for PC and MP user group and the control group. These characteristics can be used as markers of human reaction to low-intensity EMT.