Online communication between school and home. Online communication between home and school is the use of digital telecommunication to convey information and ideas between teachers, students, parents, and school administrators.
In more severe cases a coma may last for over five weeks, while some have lasted as long as several years. After this time, some patients gradually come out of the coma, some progress to a vegetative state, and others die. Some patients who have entered a vegetative state go on to regain a degree of awareness. Others remain in a vegetative state for years or even decades (the longest recorded period being 42 years). The outcome for coma and vegetative state depends on the cause, location, severity and extent of neurological damage.
Top 10 Celebrities Who Survived a Coma. A coma is a state of unconsciousness, lasting more than 6 hours in which a person cannot be awakened, fails to respond to painful stimuli, light, sound, and lacks a normal sleep-wake cycle. A coma is caused by injury to either the cerebral cortex or the reticular activating system.