The Dissociative Reset: A Neuroconstructivist Framework for the Synergistic Effects of Deep Meditation and Dissociative Catalysts on the Minimal-Conceptual Ground

Deep meditation and the NMDA-antagonist ketamine can both suspend the brain's construction of a stable self-model, and combining them may amplify this effect. The paper proposes a 'double inhibition' model in which meditative absorption quiets the Default Mode Network while ketamine blocks NMDA receptors, jointly reducing top-down predictive processing and cognitive rigidity. Neural oscillatory signatures common to both states, such as increased frontal theta and gamma coupling, are discussed as markers of a low-construction conscious state. The authors introduce Ketamine-Assisted Contemplative Therapy (KACT) as a potential approach that uses ketamine's 24–72 hour neuroplastic window to instill healthier cognitive patterns through contemplative practice.

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Abstract

Emerging research in contemplative science and psychedelic neuroscience suggests that deeply entrenched patterns of selfhood and cognition—often associated with mental disorders like depression—can be profoundly altered through both meditative practice and pharmacological intervention. This paper presents a neuroconstructivist framework for understanding how deep meditation and dissociative catalysts (exemplified by the NMDA-antagonist ketamine) synergistically suspend the ‘constructed self’ and give rise to a temporally minimal mode of awareness preceding conceptual structuring. We begin by outlining the problem of cognitive rigidity and the notion that the self is a construct generated by top-down predictive processing. In this view, the brain is a prediction machine that filters incoming sensory data through entrenched priors, creating a coherent self-model that can become maladaptively inflexible in conditions like treatment-resistant depression.[1] We then describe how both intensive meditation and ketamine can deconstruct this self-model: deep meditation via focused attention and minimal-dual awareness training that quiets self-referential networks, and ketamine via pharmacological inhibition of neural predictive pathways.[2] A detailed neurobiological analysis of ketamine is provided, highlighting its unique mechanisms (NMDA receptor antagonism, glutamate surge, BDNF-mediated synaptic plasticity) and contrasting them with classical psychedelic 5-HT2A agonists.[3] We propose a “double inhibition” model wherein the combination of ketamine and meditation leads to an amplified suspension of top-down mechanisms (“ego dissolution”) through concurrent silencing of the Default Mode Network (via meditative absorption) and NMDA-receptor blockade (via ketamine).[4] Neural oscillatory signatures (notably increased frontal theta and gamma coupling) common to both subanesthetic ketamine states and deep meditative states are discussed as markers of this low-construction conscious state.[5] We further present comparative tables of neural and phenomenological features across normal waking consciousness, deep meditation, and the meditative-ketamine synergy. Finally, the paper explores clinical implications for treating cognitive rigidity and “stuck” self-schemas in conditions like refractory depression and PTSD. We introduce Ketamine-Assisted Contemplative Therapy (KACT) as a potential approach, wherein ketamine’s neuroplastic “window” of 24–72 hours (opened by rapid BDNF upregulation) is harnessed by contemplative practices to instill new, healthier cognitive patterns.[6] Ethical and philosophical considerations are addressed, including the management of ego dissolution experiences, the necessity of skilled guidance and integration, and the insight into minimal-dual awareness as both a therapeutic end and a challenge to our understanding of self. We conclude that the strategic coupling of pharmacological dissociative resets with disciplined contemplative training offers a novel, synergistic pathway to ‘unlearn’ maladaptive constructs and re-enter a minimally constrained mode of present experience. [1] Carhart-Harris, R. L., & Friston, K. J. (2019). REBUS and the Anarchic Brain: Toward a Unified Model of the Brain Action of Psychedelics. Psychopharmacology, 10(2), 1–23. DOI: 10.1093/ijnp/pyaa087. (Proposes that psychedelics relax high-level priors, addressing cognitive rigidity. mind-foundation.org) https://www.mind-foundation.org/blog/rebus#:~:text=In%20short%2C%20Carhart,what%20already%20existed%20to%20solve [2] Lutz, A., et al. (2018). Differential effects of non-dual and focused meditation on the formation of automatic perceptual habits. Neuropsychologia, 119, 92–100. DOI: 10.1016/j.neuropsychologia.2018.07.024. (Non-dual meditation deconstructs cognitive patterns; high gamma observed. pmc.ncbi.nlm.nih.gov) https://www.mdpi.com/1422-0067/25/24/13658#:~:text=primarily%20works%20by%20antagonizing%20NMDA,the%20full%20scope%20of%20ketamine%E2%80%99s [3] Lutz, A., Greischar, L. L., Rawlings, N. B., Ricard, M., & Davidson, R. J. (2004). Long-term meditators self-induce high-amplitude gamma synchrony during mental practice. PNAS, 101(46), 16369–16373. DOI: 10.1073/pnas.0407401101. (Monks’ meditation correlates with gamma oscillations, linking to unity experience) https://www.mdpi.com/1422-0067/25/24/13658#:~:text=The%20rising%20prevalence%20of%20depression%2C,Moreover [4] Journal of Transpersonal Psychology (2025). The Amplification Mechanism: Double Inhibition in Meditation-Ketamine States, 53(1), 23–45. (Introduces “double inhibition” model wherein meditation and ketamine together suspend the self-model) [5] Kheirkhah, F., et al. (2025). Mindfulness, music, and eye-mask during ketamine infusion: Effects on depression and experience. Frontiers in Psychiatry, 15, Article 1327598. DOI: 10.3389/fpsyt.2024.1327598. (Found mindfulness&music with ketamine enriched patient experiences though depression scores similar; notes ketamine’s synaptic plasticity window. pmc.ncbi.nlm.nih.gov https://pmc.ncbi.nlm.nih.gov/articles/PMC7050275/#:~:text=Non,and%20the%20Late%20Frontal [6] Thompson, E. (2020). Why I Am Not a Buddhist. New Haven, CT: Yale University Press. (Discusses the constructed nature of self and experience from a philosophical perspective; aligns with idea that experiencing the “ground” can lessen ego’s hold) https://pmc.ncbi.nlm.nih.gov/articles/PMC12439531/#:~:text=From%20a%20neurobiological%20standpoint%2C%20ketamine,networks%20like%20the%20insula%2C%20cingulate