Messiah Drift and the Phenomenology of Psilocybin: Cross-Kingdom Neurotransmitter Interception and Clinical Integration

As legal psilocybin services expand, this paper addresses gaps in clinical protocols and mechanistic explanations for psychedelic experiences. A dual-drift model (Mystification Drift and Messiah Drift) with a five-step anchoring protocol is introduced for facilitators managing archetypal responses during integration. The mechanistic hypothesis posits that psilocybin functions as an intercellular signaling molecule within mycelial networks, with human experiences resulting from cross-kingdom receptor compatibility—fungal coordination molecules activating mammalian 5-HT2A receptors through evolutionarily conserved indolamine architecture. Experiences are self-generated but operate under altered constraint regimes, explaining coherence without external information transfer. Testable predictions include temporal precedence, spatial topology mapping, and coordination impairment upon blocking.

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Abstract

Abstract This paper addresses two critical gaps as legal psilocybin mental health services expand: practical clinical protocols for integration challenges, and a mechanistic explanation for phenomenological coherence that avoids both mysticism and reductive dismissal.Clinical Contribution: I introduce a dual-drift model (Mystification Drift and Messiah Drift) with a five-step anchoring protocol for facilitators managing archetypal responses during integration. These tools are immediately applicable regardless of theoretical framework.Mechanistic Hypothesis: Psilocybin functions as intercellular signaling molecule within mycelial networks. Human experiences result from cross-kingdom receptor compatibility—fungal coordination molecules activating mammalian 5-HT2A receptors through evolutionarily conserved indolamine architecture. Experiences are entirely self-generated but operate under altered constraint regimes, explaining coherence without requiring external information transfer.Evidence Base: The signaling hypothesis emerges from structural identity to neurotransmitters, functional necessity of chemical coordination in observable mycelial behaviors, evolutionary conservation across kingdoms, and chemical diversity suggesting vocabulary not single toxin. I identify this as the null hypothesis; alternatives require more assumptions.Testable Predictions: Temporal precedence, spatial topology mapping, coordination impairment upon blocking, complexity correlation, and environmental responsiveness—all empirically distinguishable from pure defense mechanisms.Therapeutic Framework: Detailed neuroplasticity mechanisms (BDNF, dendritic growth, DMN normalization), integration protocols, screening criteria, and facilitator responsibilities grounded in established neuroscience.The framework aligns with predictive processing models while generating clear experimental pathways for mycological research. Clinical protocols serve immediate practitioner needs; mechanistic hypothesis advances empirical investigation beyond current assumptions.