NEUROLOGIC COMPLICATIONS still are a major concern after cardiac surgery.1 Moreover, the pathophysiology of neurocognitive function after cardiac surgery remains complex.2 The most currently used noninvasive brain monitors during cardiac surgery are, on one hand, the processed electroencephalogram (EEG) monitors and, on the other hand, the cerebral oximetry monitors providing regional cerebral oxygen saturation (rScO2) by near-infrared spectroscopy technology. The use of these monitors recently has been recommended,3 and their combination gives complimentary information that is useful for improving patient care. [...]