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Motor cortical circuits contribute to crossed facilitation of trunk ...

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By sy chiou · 2020 · cited by 2 — the neural pathways projecting to the trunk muscles, resulting in ... moto evoked potentials (meps) in the es muscle increase after the arm cycling. 12 pages
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1Vol.:(0123456789)Scientific Reports | (2020) 10:17067 | https://doi.org/10.1038/s41598-020-74005-zwww.nature.com/scientificreportsMotor cortical circuits contributeto crossed facilitation of trunkmuscles induced by rhythmic armmovementShin‑Yi Chiou1,2*, Laura Morris1,3 , Weidong Gou1,3 , Emma Alexander1 & Eliot Gay1Training of one limb improves performance of the contralateral, untrained limb, a phenomenon knownas cross transfer. It has been used for rehabilitation interventions, i.e. mirror therapy, in people withneurologic disorders. However, it remains unknown whether training of the upper limb can induce thecross‑transfer effect to the trunk muscles. Using transcranial magnetic stimulation over the primarymotor cortex (M1) we examined motor evoked potentials (MEPs) in the contralateral erector spinae(ES) muscle before and after 30 min of unilateral arm cycling in healthy volunteers. ES MEPs wereincreased after the arm cycling. To understand the origin of this facilitatory effect, ...