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Depersonalization is a frequent reaction to life-threatening danger. As an adaptive pattern of the nervous system it alerts the organism to its threatening environment while holding potentially disorganizing emotion in check. As a psychological mechanism it defends the endangered personality against the threat of death and, at the same time, initiates an integration of that reality. And, as a meaningful experience, a mystical elaboration of the phenomenon may achieve spiritual significance. This type of encounter with death may be followed by a sense of rebirth.
Noyes et al. (Thu,) studied this question.
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