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. 2017 Dec 19;11:616. doi: 10.3389/fnhum.2017.00616

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Copyright © 2017 Grissmann, Faller, Scharinger, Spüler and Gerjets.

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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Box plots showing median values for frontal theta activity, parietal alpha activity and Frontal Alpha Asymmetry (FAA). Blue boxes show frontal theta activity (A), parietal alpha activity (B) and FAA (C) for the 1-back conditions. Green boxes show frontal theta activity (A), parietal alpha activity (B) and FAA (C) for the 2-back conditions. Median values are indicated by black horizontal lines within the boxes. Top and bottom borders of the boxes represent the middle 50% of the data. Whiskers represent the smallest and largest values not classified as outliers (between 1.5 and 3 times the height of the boxes) or extreme values (more than three times the height of the boxes). Circles indicate outliers. Please note the strong variability in the data due to large inter-individual differences.