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. 2015 May 12;9:247. doi: 10.3389/fnhum.2015.00247

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Copyright © 2015 Bulea, Kim, Damiano, Stanley and Park.

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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Time frequency decomposition of cortical clusters during steady, slow treadmill walking. (A) The average topographical scalp projections of independent components comprising the six cortical clusters. Grand mean time frequency amplitude ratio to the mean gait cycle spectrum, constituting gait cycle event related spectral perturbations (ERSPs) for each cluster during (B) passive and (C) active treadmill walking. Event related desynchronization (ERD) and synchronization (ERS) during (D) passive and (E) active treadmill walking relative to quiet standing for each cluster.