#$%^&*AU2019246815A120191031.pdf#####Abstract Systems and methods for sleep stage determination are disclosed. Example systems disclosed herein includes a complexity module operable to measure the complexity of regularities in an EEG channel, and a stager operable to output at least one corresponding sleep stage. Some example systems also include monitoring a subject, and determine the subject may have impairment, Alzheimer's disease, or anesthesia problem that is associated with sleep staging problem.C"J (N 00 0 u L- UJ L.fl U-i 0 o. LILU 00 00I 0 cr:/2<；
