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. 2013 Mar 7;7:66. doi: 10.3389/fnhum.2013.00066

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Copyright © 2013 Kumar, Riddoch and Humphreys.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.

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Grand averaged ERD/ERS traces (smoothed across a 100 ms moving window) from electrodes pooled across the scalp regions of primary sensory motor area and supplementary motor area (PSM and SMA). ERS for non-objects started earlier than for objects and ERD related to congruently gripped objects lasted longer and had a greater amplitude in the lower (A) and the upper (B) mu frequency bands. ERD, event-related desynchronization; ERS, event-related synchronization; PSM, primary sensory motor area; SMA, supplementary motor area.