... normal sleep, and anesthesia-invoked sleep. Some of the techniques used include cephalometry, fluoroscopy, computed tomo-graphic (CT )- and magnetic resonance (MR)-imaging, acoustic reflection, and ... emotions), sleep paraly-sis (inability to move at sleep onset or upon awakening), hypnagogic or hypnopom-pic hallucinations (dream-like perceptions at sleep onset or upon awakening), and nocturnal sleep ... numerous and most commonly include SDB, chronic sleep deprivation and insuffi-cient sleep syndrome, inadequate sleep hygiene, RLS, and PLMS with frequent nocturnal awakenings.Relation Between Sleep...