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. 2016 May 10;10:188. doi: 10.3389/fnhum.2016.00188

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Copyright © 2016 Oliveira, Schlink, Hairston, König and Ferris.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution and 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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Boxplots representing Intra class correlation coefficient (ICC) of 12 electrode locations for PSN, SNR and EEG variance (CV_ERP) in seated (sit) and walking (wlk) conditions. Data was recorded from Biosemi (left panel), Cognionics wet (central panel) and Cognionics dry (right panel). No data from Cdry walking was included as the 75 μV amplitude threshold removed all epochs for this system and condition. For each panel, data from all 12 electrode locations were included in the boxplots. In each plot the central red mark is the median, the edges of the box the 25th and 75th percentiles. The whiskers cover approx. 99% of the data. ⁺denotes ICC values outside the box limits.