NEAR DEATH EXPERIENCE
BIOLOGICAL EXPLANATION FOR NEAR DEATH EXPERIENCE
A near-death experience is defined as a life-threatening event (such as a heart attack or traffic crash) when a person felt a number of sensations, including a sense of being outside their physical body, unusual alertness, seeing an intense light, and having a feeling of peace. Researchers report that people who say they’ve had a near-death experience; they often have different sleep-wake control systems than other people.
Researchers compared 55 people suffered from a near-death experience to 55 people who hadn't had this kind of phenomenon. The researchers found that those with near death experiences were more likely to have less clearly separated boundaries between sleeping and waking. Probably, normal and the REM (rapid eye movement) state of sleep intruded into normal wakeful consciousness, i.e. REM state intrusion. Examples of REM state intrusion include: waking up and having the feeling of being unable to move; sudden muscle weakness in the legs; and hearing sounds just before falling asleep or just after waking up that other people can't hear. REM state intrusion may also be associated with other disorders, including narcolepsy and Parkinson disease.
The report appears in the April 11 issue of the Journal Neurology. "Views & Reviews" section, Author: Kevin R. Nelson, MD, FAAN, of the University of Kentucky in Lexington.
Reference: 'Near death' has biological basis, BBC NEWS, April 11, 2006
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