Maintenance of standing posture during multi-directional leaning demands the recruitment of task-specific motor units in the ankle plantarflexors.
Sign Up to like & getrecommendations! Published in 2021 at "Experimental brain research"
DOI: 10.1007/s00221-021-06154-0
Abstract: The purpose of this study is to investigate whether regional modulation of the ankle plantarflexors during standing was related to the recruitment of motor units associated with force direction. Fourteen participants performed a multi-directional leaning… read more here.
Keywords: motor units; task; ankle plantarflexors; multi directional ... See more keywords
Modulation of Microglia by Voluntary Exercise or CSF1R Inhibition Prevents Age-Related Loss of Functional Motor Units.
Sign Up to like & getrecommendations! Published in 2019 at "Cell reports"
DOI: 10.1016/j.celrep.2019.10.003
Abstract: Age-related loss of skeletal muscle innervation by motor neurons leads to impaired neuromuscular function and is a well-established clinical phenomenon. However, the underlying pathogenesis remains unclear. Studying mice, we find that the number of motor… read more here.
Keywords: age related; related loss; motor units; loss ... See more keywords
FV 10 Automated motor unit counting (MSCAN) in amyotrophic lateral sclerosis
Sign Up to like & getrecommendations! Published in 2017 at "Clinical Neurophysiology"
DOI: 10.1016/j.clinph.2017.06.052
Abstract: Introduction Motor unit number estimations methods have been used to quantify the loss of motor units underlying ALS, a deadly neurodegenerative disease. MUNIX relies on surface interference patterns (SIP) recorded during voluntary isometric contractions. In… read more here.
Keywords: motor units; motor unit; disease; motor ... See more keywords
F127. Abnormal axonal inward rectification revealed in ALS patients with a low number of functionally intact motor units
Sign Up to like & getrecommendations! Published in 2018 at "Clinical Neurophysiology"
DOI: 10.1016/j.clinph.2018.04.290
Abstract: Introduction Amyotrophic Lateral Sclerosis (ALS) is characterized by progressive loss of motor units. Changes in axonal excitability parameters have already been shown in earlier studies differing between severely and moderately affected disease by staging the… read more here.
Keywords: motor units; axonal excitability; number; motor ... See more keywords
Distribution of muscle fibre conduction velocity for representative samples of motor units in the full recruitment range of the tibialis anterior muscle
Sign Up to like & getrecommendations! Published in 2018 at "Acta Physiologica"
DOI: 10.1111/apha.12930
Abstract: Motor units are recruited in an orderly manner according to the size of motor neurones. Moreover, because larger motor neurones innervate fibres with larger diameters than smaller motor neurones, motor units should be recruited orderly… read more here.
Keywords: motor units; muscle; conduction velocity; motor ... See more keywords
Common synaptic input between motor units from the lateral and medial posterior soleus compartments does not differ from that within each compartment.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of applied physiology"
DOI: 10.1152/japplphysiol.00587.2022
Abstract: The human soleus muscle is anatomically divided into four separate anatomical compartments. The functional role of this compartmentalisation remains unclear. Here, we tested the hypothesis that the common synaptic input to motor units between the… read more here.
Keywords: common synaptic; motor units; motor; synaptic input ... See more keywords
Oscillations in neural drive and age-related reductions in force steadiness with a cognitive challenge.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of applied physiology"
DOI: 10.1152/japplphysiol.00821.2018
Abstract: A cognitive challenge when imposed during a low-force isometric contraction will exacerbate sex- and age-related decreases in force steadiness, but the mechanism is not known. We determined the role of oscillations in the common synaptic… read more here.
Keywords: force steadiness; motor units; challenge; cognitive challenge ... See more keywords
Motor unit territories in human genioglossus estimated with multichannel intramuscular electrodes.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of applied physiology"
DOI: 10.1152/japplphysiol.00889.2017
Abstract: The discharge patterns of genioglossus motor units during breathing have been well-characterized in previous studies, but their localization and territories are not known. In this study, we used two newly developed intramuscular multichannel electrodes to… read more here.
Keywords: motor units; genioglossus motor; motor; motor unit ... See more keywords
Reciprocal inhibition between motor neurons of the tibialis anterior and triceps surae in humans.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of neurophysiology"
DOI: 10.1152/jn.00424.2017
Abstract: Motor neurons innervating antagonist muscles receive reciprocal inhibitory afferent inputs to facilitate the joint movement in the two directions. The present study investigates the mutual transmission of reciprocal inhibitory afferent inputs between the tibialis anterior… read more here.
Keywords: motor units; transmission; motor neurons; inhibition ... See more keywords
Context-specific early recruitment of small motor units in the shoulder muscle reflects a reach movement plan.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of neurophysiology"
DOI: 10.1152/jn.00522.2022
Abstract: Understanding how motor plans are transformed into appropriate patterns of muscle activity is a central question in motor control. While muscle activity during the delay period has not been reported using conventional EMG approaches, we… read more here.
Keywords: muscle; motor units; motor; activity ... See more keywords
Differences in motor unit firing properties of the vastus lateralis muscle during postural and voluntary tasks
Sign Up to like & getrecommendations! Published in 2022 at "Frontiers in Physiology"
DOI: 10.3389/fphys.2022.955912
Abstract: The firing properties of the motor units are usually affected by the motor task. However, it has not been clarified whether the firing properties of the motor units of a specific muscle are different between… read more here.
Keywords: firing properties; task; motor units; muscle ... See more keywords