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