Figure 3. The figure presents a list of the four strongest links between the spatial patterns computed for the subject ALFA in the beta frequency band. Each square represents the view of the cortex from the above, nose at the bottom. The causal relation is expressed between the spatial cortical patterns (squares) located in the same row, with the left spatial pattern causing the right one. In other words, a spatial cortical pattern related to an independent component located in the left column “causes” the spatial cortical pattern in the right column at the same row. This causality is expressed by the blue arrow, moving from the left pattern and pointing to the right one. The flat-coloured areas in each square depicts the cortical segmentation of the ROIs analyzed in this task. The sphere located inside each flat-coloured area represent the intensity of the cortical activation, as reflected by the results from the ICA processing ( column of the Anorm matrix). Figure presents the strong causal relation in the beta band for the subject ALFA between the spatial cortical patterns returned by the application of the ICA to the estimated cortical data. The causality between the spatial cortical patterns in this frequency band is statistically significant at a threshold of 1%. The head below the cortical patterns shows the 3D view corresponding to the square connectivity patterns above.