Near-death experiences (NDEs) are a phenomenon where individuals who have been close to death report having a range of experiences, including feelings of peace and detachment from the body, a sense of moving through a tunnel, and encountering a bright light or a being of light. Some people who have had NDEs also report having experiences that they interpret as evidence of an afterlife, such as encountering deceased loved ones or having a sense of transcendence.
The study of near-death experiences began in the 1970s with the work of Dr. Raymond Moody, who published a book called "Life After Life" in 1975, in which he discussed the experiences of people who had been close to death. Since then, many other researchers have studied NDEs and have attempted to explain them through physiological or psychological means.
One theory is that NDEs are a result of changes in brain function that occur during a near-death event, such as decreased blood flow to the brain or changes in the levels of certain chemicals. Another theory is that NDEs are a result of psychological factors, such as expectations or a coping mechanism for dealing with the trauma of a near-death event.
Elisabeth Kubler-Ross was a Swiss-American psychiatrist, a pioneer in near-death studies, and the author of the groundbreaking book "On Death and Dying", in which she first discussed the concept of the five stages of grief. She also wrote extensively on the subject of NDEs, in which she described them as a "transcendental experience" and argued that they provide evidence of an afterlife. However, her work on NDEs was not based on scientific research and her theories were not widely accepted by the scientific community.
It's important to note that NDEs are still not fully understood and the theories about their causes are still debated. The study of NDEs is a complex and multidisciplinary field, and more research is needed to fully understand the phenomenon.
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