Influence of timing variability between motor unit potentials on M-wave characteristics

The transient enlargement of the compound muscle action potential (M wave) after a conditioning contraction is referred to as potentiation. It has been recently shown that the potentiation of the first and second phases of a monopolar M wave differed drastically; namely, the first phase remained largely unchanged, whereas the second phase underwent a marked enlargement and shortening. This dissimilar potentiation of the first and second phases has been suggested to be attributed to a transient increase in conduction velocity after the contraction.

Source: Journal of Electromyography and Kinesiology - August 4, 2016 Category: Neurology Authors: Javier Rodriguez-Falces, Armando Malanda, Iban Latasa, Ana Lavilla-Oiz, Javier Navallas Source Type: research