ArticleJournal of neurophysiology2016
Muscle fatigue increases beta-band coherence between the firing times of simultaneously active motor units in the first dorsal interosseous muscle.
Article in Journal of neurophysiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 31 papers.
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Who cites it
31 citing papers in PubMed.
- Paretic Hand Beta Band Intermuscular Coherence Increases Following non-Paretic Hand Exercise to Task-Failure in Chronic Stroke.Restorative neurology and neuroscience · 2026Article
- Blood flow restriction modulates common drive to motor units and force precision: implications for neuromuscular coordination.European journal of applied physiology · 2026Article
- Dynamics of brain-muscle interaction with neuromuscular fatigability: systematic review.Frontiers in physiology · 2026Review
- Factors influencing corticomuscular coherence for axial and lower limb musculature in a healthy population: a scoping review.Frontiers in human neuroscience · 2026Review
- Chronic sustained hypoxia alters the pattern of diaphragm electrical activity in anaesthetized rats.Experimental physiology · 2025Article
- Effects of fatigue on motor unit characteristics in isometric elbow contractions across age groups.Frontiers in neuroscience · 2025Article
- Detecting muscle fatigue among community-dwelling senior adults with shape features of the probability density function of sEMG.Journal of neuroengineering and rehabilitation · 2024Article
- Alpha band oscillations in common synaptic input are explanatory of the complexity of isometric knee extensor muscle torque signals.Experimental physiology · 2024Article
- Motor unit firing rates increase in prepubescent youth following linear periodization resistance exercise training.European journal of applied physiology · 2024Article
- Supraspinal, spinal, and motor unit adjustments to fatiguing isometric contractions of the knee extensors at low and high submaximal intensities in males.Journal of applied physiology (Bethesda, Md. : 1985) · 2024Article
- Modified motor unit properties in residual muscle following transtibial amputation.Journal of neural engineering · 2024Article
- Using nonlinear dynamics analysis to evaluate time response of cupping therapy with different intervention timings on reducing muscle fatigue.Frontiers in bioengineering and biotechnology · 2024Article
- A comparison of techniques for verifying the accuracy of precision decomposition-derived relationships between motor unit firing rates and recruitment thresholds from surface EMG signals.Experimental brain research · 2023Article
- Corticomuscular and intermuscular coherence are correlated after stroke: a simplified motor control?Brain communications · 2023Article
- The reliability of the slopes and y-intercepts of the motor unit firing times and action potential waveforms versus recruitment threshold relationships derived from surface electromyography signal decomposition.European journal of applied physiology · 2021Article
- Does strict validation criteria for individual motor units alter population-based regression models of the motor unit pool?Experimental brain research · 2020Article
- Intermuscular coherence between homologous muscles during dynamic and static movement periods of bipedal squatting.Journal of neurophysiology · 2020Article
- Age-specific modulation of intermuscular beta coherence during gait before and after experimentally induced fatigue.Scientific reports · 2020Article
- Fatigue-related modulation of low-frequency common drive to motor units.European journal of applied physiology · 2020Article
- Sex-related differences in motor unit firing rates and action potential amplitudes of the first dorsal interosseous during high-, but not low-intensity contractions.Experimental brain research · 2020Article
Corrections and comments
- Erratum issuedCorrigendum.2018
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Synchronization between the firing times of simultaneously active motor units (MUs) is generally assumed to increase during fatiguing contractions. To date, however, estimates of MU synchronization have relied on indirect measures, derived from surface electromyographic (EMG) interference signals. This study used intramuscular coherence to investigate the correlation between MU discharges in the first dorsal interosseous muscle during and immediately following a submaximal fatiguing contraction, and after rest. Coherence between composite MU spike trains, derived from decomposed surface EMG, were examined in the delta (1-4 Hz), alpha (8-12 Hz), beta (15-30 Hz), and gamma (30-60 Hz) frequency band ranges. A significant increase in MU coherence was observed in the delta, alpha, and beta frequency bands postfatigue. In addition, wavelet coherence revealed a tendency for delta-, alpha-, and beta-band coherence to increase during the fatiguing contraction, with subjects exhibiting low initial coherence values displaying the greatest relative increase. This was accompanied by an increase in MU short-term synchronization and a decline in mean firing rate of the majority of MUs detected during the sustained contraction. A model of the motoneuron pool and surface EMG was used to investigate factors influencing the coherence estimate. Simulation results indicated that changes in motoneuron inhibition and firing rates alone could not directly account for increased beta-band coherence postfatigue. The observed increase is, therefore, more likely to arise from an increase in the strength of correlated inputs to MUs as the muscle fatigues.
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