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. 2022 Feb 9;16:814028. doi: 10.3389/fnsys.2022.814028

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Copyright © 2022 Harnie, Audet, Mari, Lecomte, Merlet, Genois, Rybak, Prilutsky and Frigon.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Modulation of EMG burst durations during quadrupedal or hindlimb-only locomotion in intact and spinal cats across speed. The figure shows burst durations in nine hindlimb muscles during Intact4, Intact2 and Spinal2 conditions at seven treadmill speeds. At each speed, 6–15 cycles were averaged per cat. Each data point indicates the mean ± SD for the group. P values comparing conditions (Cond) and speeds are indicated (main effects of repeated-measures ANOVA). LG, lateral gastrocnemius (n = 7 cats); MG, medial gastrocnemius (n = 7 cats); SOL, soleus (n = 8 cats); VL, vastus lateralis (n = 6 cats); BFA, biceps femoris anterior (n = 7 cats); IP, iliopsoas (n = 6 cats); SRT, anterior sartorius (n = 6 cats); ST, semitendinosus (n = 7 cats); BFP, biceps femoris posterior (n = 6 cats).