Spectral profiles of 16 example areas seen a) laterally and b) from the midsagittal plane.

<p>Clustered power spectra in source space represent normalised power, i.e., spectral power in comparison to the whole brain. Legends show the corresponding duration of each pattern (i.e., the percentage of trials in which each spectrum was present on average during recording). Shaded error bars illustrate the standard error of the mean across participants. The lines are colour-coded for the respective frequency bands (red: delta, green: theta, blue: alpha, orange: beta, grey: gamma). Inlets show average power spectra for respective areas without normalisation (dotted lines) and with ratio normalisation (continuous lines). Note that frequency on the <i>x</i>-axis is scaled logarithmically, and that data at 50 Hz (line noise) is interpolated in the plots.