Fig. 7
Group statistical spectral activation maps in theta and alpha bands obtained performing a non-parametric permutation test (α = 0.05), comparing the PSD obtained in high vs low interaction levels. Red voxels report significant synchronizations (t-values when high > low) while blue for desynchronizations (t-values when high < low). Images were generated using the Loreta Viewer utility, available at (http://www.uzh.ch/keyinst/loretaOldy.htm)