Figure 4.

Comparing the distributions of information outflow from different EEG channels. Each plot in (A) visualizes the distributions of information outflow values from a single channel, from the “awake” (blue) and “anesthetized” (red) states. Again, the data is pooled from all patients in the given state. The vertical positions of the stars indicate the proportion of outliers on the indicated sides of the distributions. The axes are equal in all panels [shown only for F9, upper left in (A)], with the y-axis showing the probability density of observations (range: 0 to 1), and the x-axis indicating the LDTF value (range: −10 to 0). The panels are ordered topographically as if the head is seen from above with the nose pointing up. The panels with a bright green frame mark the channels with significantly different distributions between the “awake” and “anesthetized” states. In (B), the same information is given as boxplots with the same color coding. The mean of each distribution is given by a filled circle in each box, and the whiskers indicate the standard deviation of the distributions. Outliers have been omitted. The y-axis shows the information outflow, and corresponds to the x-axes of the plots in (A). (C) Shows a topographical plot of the results from the statistical test comparing the distributions of LDTF information outflow values for each channel between awake and anesthetized states—controlling for autocorrelation in the information outflow, resampling to make the data sizes similar, and correcting for multiple comparisons. Green colors indicate regions with significantly different median information outflow distributions in awake and anesthetized states.