*3.6.3. Multipolar configurations*

This configuration uses more than two detecting surfaces to acquire the EMG signal with the help of a reference electrode. This configuration further reduces crosstalk and noise concerns [14]. A much more enhanced EMG signal is acquired from this configuration. The signals from three or more EMG detecting surfaces, placed 1-2 cm from each other, are passed through more than two stages of differential amplification. For example if three detecting surfaces are used then double differential technique is employed.

This configuration is used in comprehensive researches carried out to study EMG muscle fiber orientation, conduction velocity and motor point localization.
