Fig. 2
From: Monitoring of anesthetic depth and EEG band power using phase lag entropy during propofol anesthesia
The change in PLE and BIS values during propofol anesthesia. The box and whiskers plots show PLE and BIS values at the time when a given propofol target effect concentration (propofol Ce) was reached. a For PLE, Spearman correlation coefficient = 0.835 (from propofol Ce 0 to propofol Ce 6.0 μg/ml). b For BIS, Spearman correlation coefficient = 0.781 (from propofol Ce 0 to propofol Ce 6.0 μg/ml). Abbreviations: PLE, phase lag entropy; BIS, bispectral index; LOC, loss of consciousness; ROC, recovery of consciousness. The boxes depict the median values and the 25th and the 75th percentiles (lower whisker = − 1.5 × IQR, upper whisker = + 1.5 × IQR, IQR; inter-quartile range, +; outlier)