Key result
Doublet discharges at contraction onset increase motor unit force and prolong afterhyperpolarization for motor control.
Population
Mammalian motor units (MUs) and motoneurons (MNs)
Design
Review
Authors
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May guide motor control optimization in rehabilitation; leaves open prospective trials for clinical validation.
Generation of doublets is an important strategy of motor control for fitting motoneuronal firing rate to optimize motor unit force at the start of contraction.
Mrówczyński et al. (2015) conducted a review in Motor unit force development. Doublet discharges vs. Single action potentials was evaluated on Motor unit force and afterhyperpolarization (AHP) duration. Doublet discharges at the onset of motor unit contractions increase motor unit force and prolong afterhyperpolarization, serving as a key motor control strategy.
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