We define dEMGTM as the process by which the surface EMG (sEMG) signal is decomposed into its constituent motor unit action potential trains (MUAPTs). It works only on signals obtained during isometric contractions ranging from minimal to maximal force. It is limited to superficial muscles, but it is successful even when they are covered with up to 1.5 cm of adipose tissue.
The technology contains guided assistance for collecting signals that can be automatically decomposed by complex Artificial Intelligence algorithms containing over 250,000 lines of code. This Tutorial provides guidance on setting up experiments and interpreting results. The technology provides the firing instances, firing rates, and MUAP shapes of 25 to 40 motor units from individual isometric contractions.
The dEMGTM system is a highly accurate technology that provides reliable information beyond that of any other system that has ever attempted to identify the firing instances and MUAP shapes of multiple concurrently active motor units. But, bear in mind that any sophisticated algorithm working on complex signals is subject to some error. The decomposition is subject to minor amounts of errors, on the order of 5%. See further explanation in How is the Accuracy of the decomposed sEMG signals verified and the following two sections.
The methodology, the technology and the algorithm have been extensively published in high-level peer-reviewed journals.