Encounter with an entity under N,N-DMT

The encounter with an entity under N,N-DMT refers to the impression of an autonomous, intentional, communicative, and often meaning-laden presence experienced during the trip. The plate approaches this phenomenon through explanatory models (predictive coding, REBUS, social cognition) and the question of its ontological status, that is, whether these entities are real or not. It articulates top-down and bottom-up factors converging toward an integrative model.

Top-down factors

On the descending side (expectations, biography, memory, mental frame), the sheet lists: set and setting, expectation and suggestion, memory, symbols and archetypes, beliefs and cultural frame, the self-model and personal history, attachment and relational figures. These priors, what the brain anticipates, projects, and interprets, feed the predictions from which the experience is constructed.

Bottom-up factors

On the ascending side (neuropharmacology, brain networks, perceptual dynamics), the plate mentions: 5-HT2A agonism with sigma-1 receptor co-activation, increased brain entropy and disorganization of the default mode network (DMN), perceptual decoupling (ordinary sensory gating interrupted), heightened salience, intense internal imagery, hyperactive theory of mind (temporo-parietal junction TPJ, medial prefrontal cortex mPFC, precuneus), and agency attribution (a HADD-type mechanism, hyperactive agent detection). These signals constitute the evidence: what the DMT state brings forth, and which amplifies or stabilizes the content lived as such.

Integrative model

The theoretical framework involves predictive coding, active inference, and the REBUS (Anarchic Brain) model. The brain combines priors, internal imagery, agency attribution, and salient signals to produce the impression of an autonomous presence. The plate stresses that this model explains but does not settle the ontological question. It accounts for the genesis of the impression without concluding on the real nature of the entities.

What is best established

The sheet distinguishes the firmer findings: the experience is almost always lived as a true image, which implies agency; the noetic quality is structural (the sense of direct knowing differs from ordinary hallucination); the self and the setting strongly modulate the content; social cognition (TPJ, mPFC) is probably central in producing the impression of another; DMT entities differ from a simple felt presence by their richness, communicability, and phenomenological stability.

Inter-subject convergence

The plate notes a convergence of content across subjects: luminous presences, geometric figures, intentional beings, sometimes transcendent feminine figures. This convergence constrains the models, yet does not prove the external reality of the entities.

Ontological status: three possible frameworks

The sheet presents three readings without choosing. Strict endogeny: the entity is entirely a product of the brain, stable cognitive structures of the human brain. Universal cognitive structures: DMT reveals stable configurations of the human brain. The filter hypothesis: the brain, which would normally filter a vaster reality, would let DMT through, opening an access. No framework fully explains the whole phenomenon.

Grey areas and unknowns

Several questions remain open: why such an inter-subject convergence; why the noetic quality is so strong and so resistant to deconstruction; what the exact role of theory-of-mind regions is in the specificity of DMT entities; why some entities appear so autonomous and relational. The schema maps the hypotheses and empirical constraints without settling the ultimate nature of the entities.

Sources

• Carhart-Harris and Friston (2019), REBUS (Anarchic Brain) model.
• Strassman (2001), research on N,N-DMT and reported entities.
• Luke (2011), work on psychedelic entities.
• Davis and colleagues (2020), survey of DMT entity encounters.
• Lawrence et al. (2022), work on DMT entities.
• Timmermann, neuroscientific research on DMT (2018, 2023).