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. 2021 Nov 10;15:718769. doi: 10.3389/fnsys.2021.718769

FIGURE 2.

FIGURE 2

AUC whisker plots (A) and entropy-by-scale curves (B), averaged across 50 participants. (A) Area under the curve (AUC) for the frontal entropy-by-scale curves for the pre-op eyes-closed awake condition and the surgical/anesthetized condition. AUC complexity values integrated across all 25 scales are higher during anesthesia/surgery relative to the conscious awake condition. (B) Frontal complexity (entropy) values (Y axis), by time scale (X axis), averaged across all participants with standard error bars shown. The blue line represents the preoperative awake/eyes closed EEG recording. The red line represents intraoperative/anesthetized EEG recording. Note the clear crossover point between scales 7 and 8, where the pre-operative complexity values are higher (compared to intra-operative complexity values) to the left of this point but are lower to the right of this point.