Fig. 4

The heatmaps of the coherence coefficient matrices and binarized functional networks for different sessions in the different bands (results of P100 as the examples). a Delta band. b Theta band. c Beta band. d Slow-gamma band. e Fast-gamma band. (Left) Heatmaps, in which the rows and columns indicate the indexes of the channels. The color represents the coherence coefficient between any two channels. As the coefficient becomes higher, it appears to turn red and conversely turn blue. (Right) Binarized functional networks, in which each hollow circle indicates a channel