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. 2014 Jul 14;14(7):12598–12622. doi: 10.3390/s140712598

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© 2014 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 5. — The general representation of M-wave and some of the commonly extracted parameters: peak-to-peak amplitude (PtP), time between peaks (PtP time), time to peak (TtP), first peak area (FPA), second peak area (SPA) [51]. Typical, in time domain, the amplitude variables of an M-wave are voltage values detected from specific points of the signal, normally the peaks. The M-wave amplitude is essentially a reflex of the magnitude of the sum of individual Motor Unit Action Potentials (MUAPs) [83].