Bloomington is a city in McLean County, Illinois, United States and the county seat. It is adjacent to Normal, Illinois, and is the more populous of the two principal municipalities of the Bloomington-Normal metropolitan area. When mentioned together, they are known as the Twin Cities, Bloomington-Normal, B-N, Blo-No, or BNorm.
Hypersomnia, or hypersomnolence, is a neurological disorder of excessive time spent sleeping or excessive sleepiness. It can have many possible causes and can cause distress and problems with functioning. In the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders, (DSM-5), hypersomnolence, of which there are several subtypes, appears under sleep-wake disorders.
Wiktionary (0.00 / 0 votes) Rate this definition: hypervigilance (Noun). An enhanced state of sensory sensitivity accompanied by an exaggerated intensity of behaviors whose purpose is to detect threats.