ArticleJournal of neurophysiology2013
Rectification of EMG in low force contractions improves detection of motor unit coherence in the beta-frequency band.
Article in Journal of neurophysiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
42 citing papers in PubMed, 79 citations in OpenAlex.
- Intramuscular coherence enables robust assessment of modulated supra-spinal input in human gait: an inter-dependence study of visual task and walking speed.Experimental brain research · 2023Trial
- Dynamic cortical participation during bilateral, cyclical ankle movements: effects of aging.Scientific reports · 2017Trial
- Changes in corticospinal drive to spinal motoneurones following tablet-based practice of manual dexterity.Physiological reports · 2016Trial
- Suppression of enhanced physiological tremor via stochastic noise: initial observations.PloS one · 2014Trial
- Trial
- Spinal motor neuron pools may be partly driven by impulsive common inputs.The Journal of physiology · 2026Article
- Task-dependent intermuscular coherence between postural muscles during voluntary upright reaching.Experimental physiology · 2026Article
- Neuromuscular control of a five-finger pinch task is influenced by training history.Experimental brain research · 2025Article
- The role of muscle synergies and task constraints on upper limb motor impairment after stroke.Experimental brain research · 2025Article
- Dopamine improves defective cortical and muscular connectivity during bilateral control of gait in Parkinson's disease.Communications biology · 2024Article
- Cortico-muscular connectivity is modulated by passive and active Lokomat-assisted Gait.Scientific reports · 2023Article
- Muscle synergies are associated with intermuscular coherence and cortico-synergy coherence in an isometric upper limb task.Experimental brain research · 2023Article
- Coherence between electromyographic signals of anterior tibialis, soleus, and gastrocnemius during standing balance tasks.Frontiers in human neuroscience · 2023Article
- Corticomuscular coherence is reduced in relation to dorsiflexion fatigability to the same extent in adults with cerebral palsy as in neurologically intact adults.European journal of applied physiology · 2022Article
- Null effects of musical groove on cortico-muscular coherence during isometric contraction.Neuroimage. Reports · 2022Article
- Effects of auditory feedback on fine motor output and corticomuscular coherence during a unilateral finger pinch task.Frontiers in neuroscience · 2022Article
- Evaluation of movement and brain activity.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2021Review
- Exercise intervention protocol in children and young adults with cerebral palsy: the effects of strength, flexibility and gait training on physical performance, neuromuscular mechanisms and cardiometabolic risk factors (EXECP).BMC sports science, medicine & rehabilitation · 2021Article
- Reconstruction of net force fluctuations from surface EMGs of multiple muscles in steady isometric plantarflexion.Experimental brain research · 2021Article
- Age-specific modulation of intermuscular beta coherence during gait before and after experimentally induced fatigue.Scientific reports · 2020Article
Corrections and comments
- Commented on by
- Commented on by
Authors and funding
4 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Rectification of surface EMG before spectral analysis is a well-established preprocessing method used in the detection of motor unit firing patterns. A number of recent studies have called into question the need for rectification before spectral analysis, pointing out that there is no supporting experimental evidence to justify rectification. We present an analysis of 190 records from 13 subjects consisting of simultaneous recordings of paired single motor units and surface EMG from the extensor digitorum longus muscle during middle finger extension against gravity (unloaded condition) and against gravity plus inertial loading (loaded condition). We directly examine the hypothesis that rectified surface EMG is a better predictor of the frequency components of motor unit synchronization than the unrectified (or raw) EMG in the beta-frequency band (15-32 Hz). We use multivariate analysis and estimate the partial coherence between the paired single units using both rectified and unrectified surface EMG as a predictor. We use a residual partial correlation measure to quantify the difference between raw and rectified EMG as predictor and analyze unloaded and loaded conditions separately. The residual correlation for the unloaded condition is 22% with raw EMG and 3.5% with rectified EMG and for the loaded condition it is 5.2% with raw EMG and 1.4% with rectified EMG. We interpret these results as strong supporting experimental evidence in favor of using the preprocessing step of surface EMG rectification before spectral analysis.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.