1 WHITEPAPER: EMG REGISTRATION OF PELVIC FLOOR MUSCLES Whitepaper: EMG Registration for Pelvic Floor Muscles

Introduction Electromyography (EMG) is a useful and objective tool to obtain information about the muscle activity(1). A muscle consists of muscle fibres. The ends of the efferent nerves are connected to the muscle fibres through motor units. Every single motor unit serves several muscle fibres. An electrical impulse, traveling through the nerves and motor units, cause a depolarisation (contraction) and repolarisation (return to their original state) of the muscle fibres. This is called a muscle action potential. This can be detected with surface electrodes, which show a composite signal of the global EMG activity of many muscle fibres in the specific muscle.