Abstract
— The uterine electromyogram (EMG) or electrohysterogram (EHG) could be used to detect a potential risk of preterm delivery in woman by analyzing its frequency content. In this study, we explore the effects of electrodes position, in terms of inactive tissues depth below the recording site and distance of electrodes to the potentials source, on the spectral characteristics of recorded signals. To explore these effects on skeletal muscle EMG and EHG, we used two numerical models but also real EHG. We have been able to notice specific effects in each situation but also cumulative effects. On real EHG, we could see that the main effect concerns the attenuation of high frequencies. Thus, the standardization of the electrode position during recording is a factor of importance.
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