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Chapter 2.13 - Summary and Conclusions of Part II

from Part II - Near-Death Experiences

Published online by Cambridge University Press:  30 August 2025

Raymond Romand
Affiliation:
University of Strasbourg
Günter Ehret
Affiliation:
University of Ulm
Steven Laureys
Affiliation:
Liège University, Belgium
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Summary

Historically, clinical death was taken as “death” and people wondered about how a dead person with a dead brain could experience something. The assumption emerged that the mind, spirit, or consciousness can survive in the period of death independently of material support: that is, independently of the brain. Modern methods of measuring brain activity have shown that coordinated neuronal activity in networks of the brain can survive clinical death for a while and may produce extraordinary experiences such as NDEs. Themes of NDEs (NDE content) can be reproduced in a variety of experimental models, all leading to altered states of consciousness of the affected persons. The personal truth of NDE stories, verified in the analysis of numerous NDE reports, and the experimental validation of NDE themes in several models under well-controlled conditions, lead to the scientifically adequate conclusion that NDE phenomena are brain-based expressions of neuronal activity in conditions of altered states of consciousness.

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