ArticleJournal of neurophysiology2019
Estimates of persistent inward current in human motor neurons during postural sway.
Article in Journal of neurophysiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 14 citations in OpenAlex.
- Disuse-Induced Muscle Fatigue: Facts and Assumptions.International journal of molecular sciences · 2024Review
- Voluntary activation of muscle in humans: does serotonergic neuromodulation matter?The Journal of physiology · 2022Review
- Effects of reciprocal inhibition and whole-body relaxation on persistent inward currents estimated by two different methods.The Journal of physiology · 2022Article
- The Cellular Basis for the Generation of Firing Patterns in Human Motor Units.Advances in neurobiology · 2022Article
- Estimates of persistent inward currents in tibialis anterior motor units during standing ramped contraction tasks in humans.Journal of neurophysiology · 2021Article
- Evidence of two modes of spiking evoked in human firing motoneurones by Ia afferent electrical stimulation.Experimental brain research · 2021Article
- Differences in estimated persistent inward currents between ankle flexors and extensors in humans.Journal of neurophysiology · 2020Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Persistent inward current (PIC) plays a critical role in setting the gain of spinal motor neurons. In humans, most estimates of PIC are made from plantarflexor or dorsiflexor motor units in a seated position. This seated and static posture negates the task-dependent nature of the monoaminergic drive and afferent inhibition that modulate PIC activation. Our purpose was to estimate PIC during both the conventional seated posture and in a more functionally relevant anterior postural sway. We hypothesized that paired motor unit estimates of PIC would be greater when during standing compared with sitting. Soleus motor neuron PIC was estimated via the paired motor unit (PMU) technique. For each motor unit pair, difference in reference unit firing frequency (ΔF) estimates of PIC were made during isometric ramps in plantarflexion force during sitting (conventional approach) and during standing anterior postural sway (new approach). Baseline reciprocal inhibition (RI) was also measured in each posture using the poststimulus time histogram technique. ΔF estimates during standing postural sway were not different [2.64 ± 0.95 pulses/s (pps),
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