Fig. 6. Variability and discrimination of cortical (EEG) and subcortical (ESCoG) dimensional activation (Da) values split by the actual response. Da mean values for EEG and ESCoG ( n =25) during consciousness and unconsciousness ( A ) and between movers and nonmovers ( B ). Conscious Da values were defined as those recorded within 30 s before induction of anesthesia. Unconscious Da values were defined as those recorded within 30 s after loss of consciousness. EEG and ESCoG Da values between movers and nonmovers were recorded within 1 min before laryngoscopy. Movers were defined as patients who showed any visible spontaneous muscle movements, such as withdrawal or flexor movement of the arms and legs, frowning of the forehead muscles, or coughing, during laryngoscopy and within 1 min of tracheal intubation. Box plots indicate medians ( horizontal line in the box ), 25th and 75th percentiles ( lower and upper box margins ), 10th and 90th percentiles ( lower and upper error bars ), and individual patients in the lower 10th percentiles ( open circles ) for each group separately. * Statistically significant comparison between conscious versus unconscious and mover versus nonmover, two-tailed Student t test , P < 0.05.