Summary: This study compares a documented near-death experience (NDE) that occurred during a coma with a later psychedelic session using the powerful endogenous compound 5-Methoxy-DMT (5MeO-DMT). Researchers identify overlapping themes such as ego dissolution and the transcendence of space and time, while also noting distinctive elements—particularly life review, encounters with deceased loved ones, and a felt threshold of no return—that appeared only in the NDE.
The participant emphasized that, despite clear similarities, the two experiences felt substantially different in several important ways.
Key findings:
- This case represents one of the rare systematic comparisons of an individual who has had both a classical psychedelic-like experience and a near-death experience.
- Both the NDE and the 5MeO-DMT session shared major themes: the dissolution of ego boundaries, the sense of cosmic love or unity, and striking alterations in time and space perception.
- Certain features—most notably an immersive life review, meetings with the deceased, and an unmistakable threshold or sense of irreversible crossing—were reported only for the NDE and not for the 5MeO-DMT experience.
Source: BIAL Foundation
Study overview:
Researchers led by Pascal Michael examined a published case study of a 54-year-old man from North America who underwent a profound near-death experience while in a coma caused by bacterial meningoencephalitis and later reported a powerful 5MeO-DMT session. The team, affiliated with the University of Greenwich and Imperial College London, used a semi-structured interview and thematic analysis to compare emergent themes across both states, giving special weight to the participant’s own reflections on how the experiences related to one another.
The analysis revealed a high degree of overlap in phenomenology. Shared characteristics included encounters with alternate realms or realities, contact with entities (both menacing and benevolent), synesthetic perceptions, perinatal-like regression experiences, and lucid, dreamlike qualities. In particular, the 5MeO-DMT session reproduced many core mystical domains—most prominently ego dissolution and the pronounced sense of transcending ordinary time and space.
However, the researchers also identified themes that appeared to be unique to the NDE: an extensive and specific life review, vivid meetings with deceased individuals, and a distinct experiential threshold conveying a sense of irreversible passage. These elements were absent from the 5MeO-DMT account and from many descriptions of psychedelic experiences in prior literature, suggesting they may be features more characteristic of true near-death states.
Notably, despite the convergences in several domains, the participant maintained that his NDE was fundamentally different from his psychedelic experience and argued that the NDE should not be reduced to the effects of endogenous psychedelics. The authors discuss several explanatory possibilities without asserting definitive causes.
Among the proposed mechanisms, the paper considers factors such as lucid dreaming and perinatal regression as partial models for certain NDE features. The authors also raise a speculative hypothesis: the specific pathological process—bacterial meningoencephalitis—may have produced distinctive cortical disruptions that created neural dynamics resembling those triggered by psychedelics (for example, through altered pyramidal neuron activity). The paper frames this neural hypothesis cautiously and emphasizes its speculative nature.
About this psychology research news
Author: Press Office
Source: BIAL Foundation
Contact: Press Office – BIAL Foundation
Image: The image is credited to Neuroscience News
Original Research: Open access. “This is your brain on death: a comparative analysis of a near-death experience and subsequent 5-Methoxy-DMT experience” by Pascal Michael et al., published in Frontiers in Psychology.
Abstract
This is your brain on death: a comparative analysis of a near-death experience and subsequent 5-Methoxy-DMT experience
Introduction: Prior research has modeled aspects of near-death experiences using classical and atypical psychedelics, but limited work has examined the relationship between the NDE and experiences elicited by the highly potent endogenous compound 5-MeO-DMT. This article presents a detailed case study of an individual known to have experienced a profound NDE during bacterial meningoencephalitis-related coma and who later underwent a 5MeO-DMT session.
Methods: Researchers conducted a semi-structured interview focused on the subject’s descriptions of both the coma-related NDE and the later 5MeO-DMT experience. They applied thematic analysis to the original NDE account and to the interview transcripts, identifying emergent themes shared between and unique to each state, and emphasizing the participant’s own judgments about similarity and difference.
Results: The study found substantial overlap between the NDE and psychedelic phenomenology, including reports of entering other worlds, encounters with entities, synesthesia, perinatal regression, and lucid dreamlike qualities. The 5MeO-DMT experience mirrored many core mystical elements—chiefly ego dissolution and marked transcendence of time and space. Distinctive NDE features—an immersive life review, encounters with deceased persons, and a threshold or sense of no return—were not replicated in the 5MeO-DMT account, indicating potential specificity to near-death states.
Discussion: Despite significant phenomenological convergence, the participant judged his NDE and psychedelic experiences to be meaningfully different and resisted attributing the NDE solely to endogenous psychedelic action. The authors discuss multiple explanatory models, including dream-based analogues and perinatal regression, and cautiously propose that the particular cortical disruption from bacterial meningoencephalitis might produce neural activity patterns that overlap with those generated by psychedelics—an idea presented as speculative and in need of further empirical testing.