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