Ragu: A Free Tool for the Analysis of EEG and MEG Event-Related Scalp Field Data Using Global Randomization Statistics

<table>Topographic consistency test (TCT) applied to the four within conditions of the sample data (C1: correct sentence ending day 1; F1: false sentence ending day 1; C2: correct ending day 2; F2: false ending day 2). For each condition, two graphs are shown. The upper one displays the <svg height="10.325" id="M69" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 11.75 10.325" width="11.75" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.325)">
<g transform="translate(72,-63.74)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑃</tspan>
</text>
</g>
</g>
</svg> value obtained by the TCT (vertical axis) and the chosen threshold (red line).  The <svg height="7.1624999" id="M70" style="vertical-align:-0.11285pt" version="1.1" viewbox="0 0 8.7250004 7.1624999" width="8.7250004" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,7.1625)">
<g transform="translate(72,-66.27)">
<text transform="matrix(1,0,0,-1,-71.95,66.44)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑥</tspan>
</text>
</g>
</g>
</svg>-axis displays the time from 0 to 1000 ms from the word onset on. The second graph shows the Global Field Power (GFP), with periods of consistent topographies marked in green. The <svg height="9.8625002" id="M71" style="vertical-align:-2.29482pt" version="1.1" viewbox="0 0 7.875 9.8625002" width="7.875" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,9.8625)">
<g transform="translate(72,-64.11)">
<text transform="matrix(1,0,0,-1,-71.95,66.45)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑦</tspan>
</text>
</g>
</g>
</svg>-axes of the lower graphs indicate the GFP amplitude in <svg height="9.6750002" id="M72" style="vertical-align:-2.29482pt" version="1.1" viewbox="0 0 9.6374998 9.6750002" width="9.6374998" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,9.675)">
<g transform="translate(72,-64.26)">
<text transform="matrix(1,0,0,-1,-71.95,66.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜇</tspan>
</text>
</g>
</g>
</svg>V.</table>

Computational Intelligence and Neuroscience

fig10

Figure 10

Figure 10: Ragu: A Free Tool for the Analysis of EEG and MEG Event-Related Scalp Field Data Using Global Randomization Statistics 