Fig. 3
From: Monitoring of anesthetic depth and EEG band power using phase lag entropy during propofol anesthesia
The spectrograms obtained from PLEM™ during propofol anesthesia. a Group-level persistence spectrogram for different states of consciousness (LOC-state, UC-state, and ROC-state). b Representative power spectrogram showing the power of the slow and delta (0.1 to 4 Hz) and alpha (8 to 13 Hz) band oscillations, and c the time domain phase lag entropy (PLE) obtained from PLEM™ during propofol anesthesia. Abbreviations: TCI, target-controlled infusion; LOC, loss of consciousness; UC, unconsciousness; ROC, recovery of consciousness. The black dashed line indicates when LOC and ROC occurred