American Society of Anesthesiologists

Fig. 3. Variation of spectral edge frequency 90 (SEF90), median power frequency (MPF), and dimensional activation (Da), during induction of anesthesia at five times, in propofol and sevoflurane groups at cortical (EEG; —) and subcortical (ESCoG; - - - -) levels. T0= before anesthesia; T1= immediately after loss of consciousness; T2= immediately before laryngoscopy; T3= immediately after tracheal intubation; T4= 5 min after tracheal intubation. * P < 0.05 versus T0. # P < 0.05, ESCoG versus EEG.

Fig. 3. Variation of spectral edge frequency 90 (SEF⁹⁰), median power frequency (MPF), and dimensional activation (Da), during induction of anesthesia at five times, in propofol and sevoflurane groups at cortical (EEG; —) and subcortical (ESCoG; - - - -) levels. T⁰= before anesthesia; T¹= immediately after loss of consciousness; T²= immediately before laryngoscopy; T³= immediately after tracheal intubation; T⁴= 5 min after tracheal intubation. * P < 0.05 versus T⁰. # P < 0.05, ESCoG versus EEG.

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