ArticleFrontiers in human neuroscience2014
Spinal motor outputs during step-to-step transitions of diverse human gaits.
Article in Frontiers in human neuroscience, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.
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37 citing papers in PubMed, 51 citations in OpenAlex.
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- Noninvasive spatiotemporal spinal neuromodulation targeting dorsal roots improves paretic leg motor control during walking in persons with stroke.Journal of neurophysiology · 2025Article
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- The impact of transcranial direct current stimulation on the neuro-muscular control strategies of penalty kicks in soccer players.Frontiers in sports and active living · 2025Article
- Article
- The Lower Limb Muscle Co-Activation Map during Human Locomotion: From Slow Walking to Running.Bioengineering (Basel, Switzerland) · 2024Article
- Evaluation of EMG patterns in children during assisted walking in the exoskeleton.Frontiers in neuroscience · 2024Article
- Spinal maps of motoneuron activity during human locomotion: neuromechanical considerations.Frontiers in physiology · 2024Review
- A Study of Racket Weight Adaptation in Advanced and Beginner Badminton Players.Applied bionics and biomechanics · 2024Article
- Modification of the locomotor pattern when deviating from the characteristic heel-to-toe rolling pattern during walking.European journal of applied physiology · 2023Article
- Unraveling age-related impairment of the neuromuscular system: exploring biomechanical and neurophysiological perspectives.Frontiers in physiology · 2023Review
- Evaluation of Spatiotemporal Patterns of the Spinal Muscle Coordination Output during Walking in the Exoskeleton.Sensors (Basel, Switzerland) · 2022Article
- Evaluation of an ankle-foot orthosis effect on gait transitional stability during ramp ascent/descent.Medical & biological engineering & computing · 2022Article
- Comparing system identification techniques for identifying human-like walking controllers.Royal Society open science · 2021Article
- Stroke impairs the control of isometric forces and muscle activations in the ipsilesional arm.Scientific reports · 2021Article
- Effects of Hemispheric Stroke Localization on the Reorganization of Arm Movements within Different Mechanical Environments.Life (Basel, Switzerland) · 2021Article
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4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aspects of human motor control can be inferred from the coordination of muscles during movement. For instance, by combining multimuscle electromyographic (EMG) recordings with human neuroanatomy, it is possible to estimate alpha-motoneuron (MN) pool activations along the spinal cord. It has previously been shown that the spinal motor output fluctuates with the body's center-of-mass motion, with bursts of activity around foot-strike and foot lift-off during walking. However, it is not known whether these MN bursts are generalizable to other ambulation tasks, nor is it clear if the spatial locus of the activity (along the rostrocaudal axis of the spinal cord) is fixed or variable. Here we sought to address these questions by investigating the spatiotemporal characteristics of the spinal motor output during various tasks: walking forward, backward, tiptoe and uphill. We reconstructed spinal maps from 26 leg muscle EMGs, including some intrinsic foot muscles. We discovered that the various walking tasks shared qualitative similarities in their temporal spinal activation profiles, exhibiting peaks around foot-strike and foot-lift. However, we also observed differences in the segmental level and intensity of spinal activations, particularly following foot-strike. For example, forward level-ground walking exhibited a mean motor output roughly 2 times lower than the other gaits. Finally, we found that the reconstruction of the spinal motor output from multimuscle EMG recordings was relatively insensitive to the subset of muscles analyzed. In summary, our results suggested temporal similarities, but spatial differences in the segmental spinal motor outputs during the step-to-step transitions of disparate walking behaviors.
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