Fig. 1From: Abnormally high Patient State Index associated with epicardial pacing: a case reportChanges in the Patient State Index (PSI) and electroencephalogram (EEG) after pacing. A The EEG wave form without spikes before pacing (PSI: 25, ARTF: 0%, SEFL: 8.0 Hz, SEFR: 4.5 Hz). B The EEG waveform with spikes synchronized with the pacing (PSI: 69, ARTF: 0%, SEFL: 7.2 Hz, SEFR: 7.7 Hz). ARTF, artifact ratio; SEF, spectral edge frequency; L, left; R, rightBack to article page