Turning on the central contribution to contractions evoked by neuromuscular electrical stimulation.
@article{Dean2007TurningOT, title={Turning on the central contribution to contractions evoked by neuromuscular electrical stimulation.}, author={Jesse C. Dean and Lisa M. Yates and David F. Collins}, journal={Journal of applied physiology}, year={2007}, volume={103 1}, pages={ 170-6 } }
Neuromuscular electrical stimulation can generate contractions through peripheral and central mechanisms. Direct activation of motor axons (peripheral mechanism) recruits motor units in an unnatural order, with fatigable muscle fibers often activated early in contractions. The activation of sensory axons can produce contractions through a central mechanism, providing excitatory synaptic input to spinal neurons that recruit motor units in the natural order. Presently, we quantified the effect of…
78 Citations
Turning off the central contribution to contractions evoked by neuromuscular electrical stimulation
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It is shown that NMES delivered for periods of up to 30 s generates plantar-flexion torque which decreases when only motor axons are recruited and increases when the central nervous system can contribute.
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The use of low-current, high-frequency nerve stimulation to activate the muscle via the spinal motoneuron (MN) pool to achieve more natural activation patterns is investigated to suggest that the proposed stimulation strategy may allow generation of considerable levels of muscle activation by motor unit recruitment that resembles the physiological conditions.
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Vibration-induced extra torque during electrically-evoked contractions of the human calf muscles
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Results show that vibratory stimuli applied with a background electrical stimulation generate considerable force levels due to the spinal recruitment of motoneurons, which could be beneficial for many therapeutic interventions and vibration-based exercise programs.
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The findings indicate that the contralateral effects of electrical nerve stimulation on the motor neuron pool innervating the homologous muscle can be influenced by both stimulus pulse duration and stimulus frequency.
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The experiments demonstrate a frequency-dependent effect of NMES on CS excitability for TA and show that, under the conditions of the present study, 100-Hz stimulation was more effective than 10, 50, and 200 Hz.
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60 References
Wide-pulse-width, high-frequency neuromuscular stimulation: implications for functional electrical stimulation.
- Medicine, BiologyJournal of applied physiology
- 2006
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Contribution of M-waves and H-reflexes to contractions evoked by tetanic nerve stimulation in humans.
- BiologyJournal of neurophysiology
- 2006
Enhanced H-reflexes contributed to extra plantarflexion, however, other factors generated extra dorsiflexion.
Sustained contractions produced by plateau‐like behaviour in human motoneurones
- BiologyThe Journal of physiology
- 2002
Overall, these centrally generated contractions are consistent with activation of plateau potentials in motoneurones innervating the ankle dorsiflexors and plantarflexors, and the interaction with volitional drives suggests that plateau behaviour may contribute significantly to the normal output of human mot oneurones.
Large Involuntary Forces Consistent with Plateau-Like Behavior of Human Motoneurons
- BiologyThe Journal of Neuroscience
- 2001
The present findings imply that plateau potentials can make a large contribution to forces produced by the human nervous system.
Intrinsic activation of human motoneurons: possible contribution to motor unit excitation.
- BiologyJournal of neurophysiology
- 2002
The estimates of intrinsically mediated depolarization of human mot oneurons are consistent with values obtained for plateau potentials obtained from intracellular recordings of motoneurons in reduced animal preparations, although various alternative mechanisms are discussed.
Electrical stimulation of the human common peroneal nerve elicits lasting facilitation of cortical motor-evoked potentials
- BiologyExperimental Brain Research
- 2003
In summary, repetitive electrical stimulation of the CP nerve elicits lasting changes in corticospinal excitability, possibly as a result of co-activating motor and sensory fibres.
Inference of motor unit recruitment order in voluntary and electrically elicited contractions.
- BiologyJournal of applied physiology
- 1990
The relationship between surface myoelectric signal parameters and the level of voluntary or electrically elicited contractions was studied in 32 experiments on the tibialis anterior muscle, indicating a recruitment order similar to that of voluntary contractions and a reverse order of recruitment.
Intrinsic activation of human motoneurons: reduction of motor unit recruitment thresholds by repeated contractions.
- BiologyJournal of neurophysiology
- 2002
The time course and behavior of the observed short-term facilitation of motor unit discharge was qualitatively similar to the warm-up phenomenon of plateau potentials seen in motoneurons of reduced preparations.
Sustained muscle contractions maintained by autonomous neuronal activity within the human spinal cord.
- BiologyJournal of neurophysiology
- 2003
The findings indicate that the sustained muscle contractions induced in this study are most likely to be maintained by autonomous activity of motoneurons and/or interneurons within the human spinal cord.
Motor-unit stimulation patterns during fatiguing contractions of constant tension.
- BiologyJournal of neurophysiology
- 1988
1. Through computer feedback control, muscle-unit tension was maintained by altering the stimulation rate of a functionally isolated motor axon. The required stimulation patterns and fatigue…