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Information dynamics of in silico EEG Brain Waves: Insights into oscillations and functions
Fig 13
Two different regimes of γfast rhythms are discriminated by the information dynamics.
Regime 1 (left panels): representative (μ,τrec) points in phase II.b, where γfast dominates only in excitatory (E) neuron population. Regime 2 (right panels): representative (μ,τrec) points in phase II.b where γfast dominates in both E and inhibitory (I) populations. Panels (A,B) depict the dispersion of the points (shown also in the insets) along the Differentiated information 
in E neurons (x-axis) and Redundant information 
in I neurons (y-axis) plane, for Regime 1 (A) and 2 (B). The inset of Panel (A) shows the maximum PSD of γfast band of E neuronal population in phase II.b, with exception of points corresponding to Regime 2 enclosed by a dashed black line and also appearing in the inset of panel (B). Panels (C,D) shows mean and standard deviation of the information measures values 
in E and 
in I obtained by grouping them into PSD intervals. The intervals are indicated in the discrete colorbar code of panel (D). Regime 1 (A and C) shows that the points with high intensity of excitatory γfast oscillations also have the highest 
and 
observed in the data. Regime 2 (B and D) shows less redundant information in the I population. Panel (C) clearly shows that, in Regime 1, higher 
and 
are associated with dominant high frequency γ oscillations (PSD>1010). However, panel (D) shows that, in Regime 2, there is almost no increase in redundant information as γfast band maximum PSD increases. Spider graphs on top of panels (A,B) show, for each γfast regime, information dynamic diagrams for two points with high values of maximum PSD in γfast band in the E neuronal population. The representative points were indicated with stars in panels (A,B) and their insets. There, the star’s color indicates the maximum PSD of γfast in excitatory population following the colormap code presented in the (A,B) panels.
doi: https://doi.org/10.1371/journal.pcbi.1012369.g013