Fig 4. Functional brain network from EEG signals.

(left) An example of network mapping the functional brain connections recorded by EEG signals on the speaker’s scalp (labels). The applied threshold w₀ = 0.06. The colour of nodes indicates two identified communities—frontal (F) and parietal (P). (right) Loss of the F/P community structure at a lower threshold w₀ = 0.05 in the correlation matrix.