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. 2014 Oct 28;5:410. doi: 10.3389/fphys.2014.00410

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Copyright © 2014 Mehta and Prilutsky.

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) or licensor 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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A representative cycle of cat level walking. (A) Stick figures and trajectories of the right metatarsophalangeal and ankle joints during a walking cycle. (B) Normalized resultant muscle moments at the ankle and knee (top, positive values designate extension); normalized raw, full-wave rectified EMG activity (middle traces) of MG (positive values) and SO (negative values); and MTU velocity (bottom traces) of MG and SO, positive MTU velocity corresponds to lengthening. Dotted vertical line separates stance and swing phase; PC, paw contact; PO, paw off.