Does the Arousal System Contribute to Near-Death and Out-of-Body Experiences? A Summary and Response
📄 Original studyPlain English Summary
When a 2006 paper in the journal Neurology claimed that near-death experiences are basically just dreams leaking into waking life — a phenomenon called REM intrusion, where dream-state brain activity pops up when you're awake — it became one of the most cited scientific explanations for NDEs. Jeffrey Long and Janice Holden wrote this thorough 35-page takedown showing the explanation doesn't hold up. Their critique lands eight solid punches. First, 40% of people who had NDEs never experienced anything resembling REM intrusion at all. The survey questions were flawed — a 'yes' answer might reflect changes that happened after the NDE, not some pre-existing brain quirk. The comparison group was made up of medical professionals who likely underreported their own dream-like experiences because they knew it could sound pathological, and they weren't even matched for having faced life-threatening situations. Perhaps most damaging: NDEs happen under conditions where REM activity is actually suppressed, like during general anesthesia or barbiturate overdose. And the experiences themselves look nothing like REM dreams — NDEs feature coherent stories, deep peace, and sometimes verifiable perceptions of real events, while REM intrusions tend to be brief, frightening, and bizarre. A striking 73.5% of people who had NDEs described them as feeling 'more real than real,' which is the opposite of dreamy. NDEs also share a remarkably consistent structure across cultures, while ordinary dreams do not. This paper set a high bar for anyone trying to explain away NDEs with simple brain-based theories.
Research Notes
The most comprehensive published rebuttal of the Nelson et al. REM-intrusion hypothesis for NDEs, which became one of the most widely cited neuroscientific NDE explanations. Important for Controversy #7 as it challenges a key reductionist account on methodological grounds. The paper's critique of unvalidated instruments, inadequate controls, and temporal ambiguity (pre- vs. post-NDE REM intrusion) sets a standard for evaluating reductionist NDE hypotheses.
A detailed 35-page critique of Nelson, Mattingly, Lee, and Schmitt's (2006) Neurology paper proposing that NDEs result from REM-intrusion via arousal-system dysfunction, and their 2007 follow-up linking OBEs to the same system. Long and Holden identify eight major weaknesses: (1) 40% of NDErs denied any REM-intrusion experiences; (2) survey questions lacked validity — 'yes' answers may reflect post-NDE aftereffects rather than pre-existing diathesis; (3) the control group (medical personnel) likely underreported REM intrusion due to awareness of pathological implications (7% vs. 19-28% general population prevalence); (4) the control group was not matched for life-threatening event exposure; (5) NDEs occur when REM is suppressed (general anesthesia, barbiturate overdose, congenital blindness without REM); (6) NDE features (coherent narrative, profound peace, veridical perception) differ fundamentally from REM intrusion (brief, terrifying, bizarre hallucinations); (7) NDERF data show 73.5% of NDErs report the experience as 'more real than real' vs. dreams; (8) NDEs have a consistent deep structure across cultures, whereas REM dreams do not.
Related Papers
Companion
- Near-Death Experience in Survivors of Cardiac Arrest: A Prospective Study in the Netherlands — van Lommel, Pim (2001)
- Consistency of Near-Death Experience Accounts over Two Decades: Are Reports Embellished over Time? — Greyson, Bruce (2007)
- Seeing Dead People Not Known to Have Died: "Peak in Darien" Experiences — Greyson, Bruce (2010)
- AWARE--AWAreness during REsuscitation--A prospective study — Parnia, Sam (2014)
- There Is Nothing Paranormal about Near-Death Experiences: How Neuroscience Can Explain Seeing Bright Lights, Meeting the Dead, or Being Convinced You Are One of Them — Mobbs, Dean (2011)
Also by these authors
More in Nde
The Central Clinical Relevance of Near-Death Experiences in Acute Care Contexts
Explanation of Near-Death Experiences: A Systematic Analysis of Case Reports and Qualitative Research
Neuro-Functional Modeling of Near-Death Experiences in Contexts of Altered States of Consciousness
AWAreness during REsuscitation - II: A Multi-Center Study of Consciousness and Awareness in Cardiac Arrest
Which Near-Death Experience Features Are Associated with Reduced Fear of Death?
📋 Cite this paper
Long, Jeffrey, Holden, Janice Miner (2007). Does the Arousal System Contribute to Near-Death and Out-of-Body Experiences? A Summary and Response. Journal of Near-Death Studies.
@article{long_2007_arousal_nde_response,
title = {Does the Arousal System Contribute to Near-Death and Out-of-Body Experiences? A Summary and Response},
author = {Long, Jeffrey and Holden, Janice Miner},
year = {2007},
journal = {Journal of Near-Death Studies},
}