Regression analysis of EEG data: single subject results.

<p>Explained variance of ERP amplitude at channel Oz over time, for each individual subject (colored thin lines) and mean across subjects (black thick line), using as regressors either (<b>A</b>), Weibull parameters beta and gamma, (<b>B</b>), Fourier parameters intercept and slope and (<b>C</b>), skewness and kurtosis; single-trial results of these analyses can be found in <b><a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1002726#pcbi.1002726.s004" target="_blank">Fig. S4</a></b>. Insets display scalp plots of r² values for all electrodes at the time of maximal explained variance averaged over subjects (113 ms for Weibull/Fourier, 254 ms for skewness/kurtosis. (<b>D</b>), Grand average ERP amplitude (averaged over all subjects and all images) for an early and a late time-point of peak explained variance displayed in <b>A–C</b>.