A system for processing and comparing abdominal EMG signals and uterine EMG signals during labor, comprising: a signal processing module having an internal processing circuit; a first plurality of skin impedance electrodes communicably coupled to the signal processing module and configured to acquire and transmit a raw abdominal EMG signal from a patient to the internal processing circuit where the raw abdominal EMG signal is amplified and filtered to a frequency band between about 20Hz and about 150Hz, thereby obtaining a processed abdominal EMG signal, wherein said first plurality of impedance electrodes further comprises a skin-to-electrode impedance matching system for monitoring a plurality of skin-to-electrode impedances and altering the input impedance of said processing circuit to adapt to said skin-to-electrode impedances; a second plurality of skin impedance electrodes communicably coupled to the signal processing module and configured to acquire and transmit a raw uterine EMG signal from a patient to the internal processing circuit where the raw uterine EMG signal is amplified and filtered to a frequency band between about 0.2Hz and about 2Hz, thereby obtaining a processed uterine EMG signal, said second plurality of impedance electrodes further comprises a skin-to-electrode impedance matching system for monitoring a plurality of skin-to-electrode impedances and altering the input impedance of said processing circuit to adapt to said skin-to-electrode impedances; an analog to digital converter operatively coupled to the processing circuit and configured to convert the processed abdominal EMG signal into a digital abdominal EMG signal and processed uterine EMG signal into a digital uterine EMG signal; and a computer communicably coupled to the signal processing module and configured to simultaneously receive and process the digital abdominal EMG signal and digital uterine EMG signal into viewable representation of abdominal and uterine muscle activity, whereby an intensity of abdominal muscle activity can be evaluated alongside a uterine muscle EMG signal such that abdominal contractions and uterine contractions can be synchronized. a signal processing module having an internal processing circuit; a first plurality of skin impedance electrodes communicably coupled to the signal processing module and configured to acquire and transmit a raw abdominal EMG signal from a patient to the internal processing circuit where the raw abdominal EMG signal is amplified and filtered to a frequency band between about 20Hz and about 150Hz, thereby obtaining a processed abdominal EMG signal, wherein said first plurality of impedance electrodes further comprises a skin-to-electrode impedance matching system for monitoring a plurality of skin-to-electrode impedances and altering the input impedance of said processing circuit to adapt to said skin-to-electrode impedances; a second plurality of skin impedance electrodes communicably coupled to the signal processing module and configured to acquire and transmit a raw uterine EMG signal from a patient to the internal processing circuit where the raw uterine EMG signal is amplified and filtered to a frequency band between about 0.2Hz and about 2Hz, thereby obtaining a processed uterine EMG signal, said second plurality of impedance electrodes further comprises a skin-to-electrode impedance matching system for monitoring a plurality of skin-to-electrode impedances and altering the input impedance of said processing circuit to adapt to said skin-to-electrode impedances; an analog to digital converter operatively coupled to the processing circuit and configured to convert the processed abdominal EMG signal into a digital abdominal EMG signal and processed uterine EMG signal into a digital uterine EMG signal; and a computer communicably coupled to the signal processing module and configured to simultaneously receive and process the digital abdominal EMG signal and digital uterine EMG signal into viewable representation of abdominal and uterine muscle activity, whereby an intensity of abdominal muscle activity can be evaluated alongside a uterine muscle EMG signal such that abdominal contractions and uterine contractions can be synchronized.