Fig. 4
From: Monitoring of anesthetic depth and EEG band power using phase lag entropy during propofol anesthesia
The change in the ratio of electroencephalogram (EEG) band power during propofol anesthesia. The box and whiskers plots show the ratio of EEG band power (gamma, beta, alpha, theta, and delta) at the time when a given propofol target effect concentration (propofol Ce) was reached. 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)