EEG, Polysomnography, Actigraphy, Brain MRI , Multiple sleep latency test, Overnight oximetry test, Dopamine transporte...r scan, PET/CT for brain metabolism, Obstructive sleep apnea, Insomnia, Sleep paralysis, Central sleep apnea, Restless legs syndrome, Narcolepsy, Idiopathic hypersomnia, Sleepwalking, REM sleep behavior disorder, Sleep related eating disorder, Parasomnia