Group analysis of the correlations between alpha power fluctuation and the BOLD signal on fMRI.

<p><i>A</i>: The positive (red-white) and negative (blue-green) correlation maps in the multiple axial planes are superimposed on a standard brain template according to the Montreal Neurological Institute (MNI) coordinate <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0066869#pone.0066869-Bush1" target="_blank">[61]</a>. The number in the bottom right of each slice indicates a Z coordinate in the MNI space. <i>B</i>: The positive and negative correlation maps in the sagittal planes at an X coordinate of +8 mm in the MNI coordinate. Only the areas with a peak-level uncorrected p<0.001 and a cluster-level FWE of 0.05 by random-effect analysis are shown. The color bars show t-values between 3.5 and 6.5. The letters in the figure indicate the direction of each brain image (L: left; R: right; P: posterior).