motor unit


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Related to motor unit: Motor unit recruitment

motor unit

[′mōd·ər ‚yü·nət]
(anatomy)
The axon of an anterior horn cell, or the motor fiber of a cranial nerve, together with the striated muscle fibers innervated by its terminal branches.
References in periodicals archive ?
It was hypothesized, however, that perhaps the strength-trained athletes had improved the ability to synchronize motor unit firings, which would increase the relative power in the low-frequency portion of the EMG spectrum [8].
Similarly, if motor unit overlap is the mechanism responsible for the reduction, variation in recruitment and rate modulation patterns across participants [34-36] could lead to variability in the amount of voluntary effort that is replaced by FES.
Patterns of motor unit recruitment can be determined using surface EMG.
Furthermore, increase in the amount of contraction forces leads to increase in the number of motor units [12].
Their control needle EMG studies also showed their improvement with a full recruitment pattern and reinnervation of motor units.
called upon from a cadre of neural pathways to perform a task) according to what is known as the "size principle of motor unit recruitment.
Designated the 113E Series, the heavy-duty belt drive includes steel helical gears with a re-engineered motor unit that is available in single or three phase for higher efficiency and performance.
Preservation of voluntary motor unit potentials was observed in all tested myotomes in 10 patients, and voluntary motor unit potentials were absent in some myotomes in 4 patients.
However, significant differences were seen between the primiparous and the nulliparous subjects in the motor unit action potentials recorded by EMG.
Electromyography tests motor unit recruitment and the integrity of the muscle innervation.
Electromechanical systems consist of a reusable, battery-powered motor unit and a replaceable lubrication canister.

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