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Ego dissolution

The weakening or loss of the sense of a bounded self, measured on its own scales and studied both as a therapeutic mediator and as a source of challenging experience.

State of the evidence

Synthesized

Synthesized from 25 studies in the library · AI-generated, grounded in the abstracts below

Found by searching the library for Ego dissolution, ego-dissolution, ego death, self-boundary loss, depersonalization of self, then ranked by relevance.

The research consistently shows that classic psychedelics (LSD, psilocybin, DMT, ayahuasca) can induce ego dissolution, which is linked to specific brain changes such as increased global connectivity, decoupling of the default-mode network, and shifts in neural criticality. The experience is multidimensional, with its valence (positive or negative) depending on neurochemical factors like regional glutamate levels, and it is associated with lasting positive outcomes like increased nature relatedness and improved well-being. A key caveat is that most neuroimaging studies have small sample sizes and are open-label or placebo-controlled but not always fully blinded, limiting the strength of causal claims.

Confidence in the evidence

Moderate
  • Multiple experimental and observational studies (e.g., 16002, 16571, 2377, 24912, 16352) consistently link ego dissolution to specific neural changes, but sample sizes are small (15-35 participants).
  • The finding is supported by a validated psychometric scale (15999) and a review (13863), but the body of evidence includes many theoretical papers and lacks large-scale, pre-registered RCTs.
  • Results are consistent across different psychedelics (LSD, psilocybin, DMT, ayahuasca) and study designs, but the field is still emerging with potential for publication bias.
How we rate confidence

Confidence reflects the strength of the underlying evidence, not whether the result is favorable. It weighs the number and size of studies, their design (randomized trials count for more than observational or single-case work), how consistently they point the same way, and their risk of bias.

Tiers run from Insufficient to High. High is rare in this field: small, early, or open-label studies land lower even when their direction is encouraging.

Evidence by study

Direction is each study's finding relative to your question: Supports, Opposes, No effect, Mixed, or Unclear.

Increased Global Functional Connectivity Correlates with LSD-Induced Ego Dissolution. 2016
Supports

LSD increases global connectivity in the brain, which correlates with subjective reports of ego dissolution.

observational cohort

Ego-Dissolution and Psychedelics: Validation of the Ego-Dissolution Inventory (EDI) 2016
Supports

The Ego-Dissolution Inventory demonstrates strong psychometric properties and confirms that ego dissolution is closely related to the psychedelic experience.

validation study

Finding the self by losing the self: Neural correlates of ego-dissolution under psilocybin 2015
Supports

Psilocybin-induced ego dissolution is associated with decreased functional connectivity between the medial temporal lobe and high-level cortical regions, disintegration of the salience network, and reduced interhemispheric communication.

placebo-controlled study Sample size: 15

Self unbound: ego dissolution in psychedelic experience 2017
Unclear

Ego dissolution experiences reveal that the self-model plays an important binding function in cognitive processing, but the self does not exist as a real entity.

theoretical or philosophical paper

Me, myself, bye: regional alterations in glutamate and the experience of ego dissolution with psilocybin. 2020
Mixed

Psilocybin induces region-dependent alterations in glutamate that predict the valence of ego dissolution: higher medial prefrontal glutamate is linked to negative ego dissolution, while lower hippocampal glutamate is linked to positive ego dissolution.

double-blind, placebo-controlled, parallel group design

Looking for the Self: Phenomenology, Neurophysiology and Philosophical Significance of Drug-induced Ego Dissolution 2017
Unclear

Drug-induced ego dissolution disrupts the minimal embodied self, suggesting that ordinary experience includes a minimal self-awareness rooted in multisensory processing.

theoretical or philosophical paper

Sub-acute and long-term effects of ayahuasca on affect and cognitive thinking style and their association with ego dissolution 2018
Supports

Ayahuasca produces sub-acute and long-term reductions in depression and stress, and improvements in convergent thinking, with changes in affect and mindfulness correlated with the degree of ego dissolution experienced during the ceremony.

observational cohort Sample size: 57

From Egoism to Ecoism: Psychedelics Increase Nature Relatedness in a State-Mediated and Context-Dependent Manner. 2019
Supports

Nature relatedness is significantly increased 2 weeks, 4 weeks, and 2 years after a psychedelic experience, and this increase depends on the extent of ego dissolution during the acute state.

prospective online study Sample size: 654

Ethics and ego dissolution: the case of psilocybin 2020
Unclear

The peculiar features of psychedelics like psilocybin, including ego dissolution, warrant an enhanced informed consent process that is more comprehensive than typical for other psychiatric medications.

theoretical or philosophical paper

Mystical and Other Alterations in Sense of Self: An Expanded Framework for Studying Nonordinary Experiences 2020
Unclear

Positive experiences of undifferentiated unity are not sui generis but rather a type of ego dissolution.

theoretical or philosophical paper

Neural Mechanisms and Psychology of Psychedelic Ego Dissolution 2022
Supports

Classic psychedelics, by agonizing 5-HT2A receptors, produce neuromodulatory changes that affect hierarchical message-passing in the brain, leading to ego dissolution and potentially enduring therapeutic effects via neural plasticity.

review

A narrative synthesis of research with 5-MeO-DMT. 2022
Supports

5-MeO-DMT induces profound alterations in consciousness including mystical experiences and ego dissolution, with potential beneficial long-term effects on mental health, but human clinical studies are lacking.

review

Neural and subjective effects of inhaled N,N-dimethyltryptamine in natural settings. 2021
Supports

Inhaled DMT in natural settings decreases alpha power and increases delta and gamma power, with gamma increases correlating with mystical-type experiences.

observational field study Sample size: 35

LSD, madness and healing: Mystical experiences as possible link between psychosis model and therapy model. 2023
Supports

LSD increases aberrant salience and suggestibility, and LSD-induced aberrant salience correlates with mystical experiences and ego dissolution.

randomized, double-blind, placebo-controlled, crossover design Sample size: 24

Effective Connectivity of Functionally Anticorrelated Networks Under Lysergic Acid Diethylamide. 2023
Supports

LSD transforms inhibitory effective connectivity from the salience network to the default mode network into excitatory connectivity and reduces inhibition from the default mode network to the dorsal attention network, potentially underlying ego dissolution.

experimental study with placebo control Sample size: 25

The Architecture of Ego Dissolution: A Mechanical-First Evaluation of N,N-Dimethyltryptamine at the Sigma-1 and 5-HT2A Interfaces 2026
Unclear

Evaluation of N,N-Dimethyltryptamine at the Sigma-1 and 5-HT2A interfaces.

theoretical

Measuring the reflective self and experiential self in self-transcendent experiences 2026
Unclear

Self-transcendence involves a decrease in the reflective self (ego dissolution) and an increase in the experiential self, reconciling the paradox of feeling smaller yet larger.

theoretical or philosophical paper

A cross-sectional survey on depersonalization/derealization and meditation-induced alterations of the self. 2026
Mixed

Meditation can induce states phenomenologically similar to depersonalization/derealization, but these are experienced as more positive and spiritually meaningful than those triggered by trauma, stress, or cannabis, though distress is not uncommon.

cross-sectional study Sample size: 121

Ego Dissolution, Death Anxiety, and Impulse Regulation: A Conceptual Psychological Model of Contemplative Transformation 2026
Unclear

Contemplative practices facilitate psychological transformation by reducing ego dissolution, which diminishes death anxiety and improves impulse regulation.

theoretical or philosophical paper

LSD Relaxes Structural Constraints on Brain Dynamics and Default Mode Decoupling Tracks Ego Dissolution 2026
Supports

LSD induces a global decoupling of low-frequency brain activity from anatomical constraints and frequency-selective reorganization of gamma-band activity within the default-mode network, which predicts ego dissolution intensity.

experimental study

Multidimensional Ego-Dissolution Assessment (MEDA): Scale Development and Substance-Specific Comparisons 2026
Mixed

Ayahuasca and DMT produce significantly higher dissolution scores than LSD and psilocybin across four of six ego-dissolution factors, while all substances yield equivalent high scores on insight and pleasure dimensions.

cross-sectional survey with exploratory factor analysis Sample size: 207

Ketamine combined with psychotherapy for treatment-resistant depression: Real-world outcomes and the role of subjective experience. 2026
Supports

Combining ketamine with brief psychodynamic psychotherapy yielded 67% response and 58% remission rates, and ego dissolution during session 3 correlated with symptom improvement.

case series Sample size: 12

From hidden springs to endless oceans: exploring the complementary roles of the amygdala and hippocampus in phenomenal experience. 2026
Unclear

The dual-origin theory of cortical development proposes that the Amygdala-System supports ego-centric consciousness while the Hippocampus-System enables selfless minimal phenomenal experiences.

theoretical or philosophical paper

Prometheus unbound? Oceanic affectivity and the neuropsychodynamics of addiction. 2026
Unclear

Addiction may function as a failed form of transcendence, with oceanic affectivity (including ego dissolution) offering temporary relief but often reinforcing a regressive return to early undifferentiated states.

theoretical or philosophical paper

DMT-induced shifts in criticality correlate with self-dissolution. 2025
Supports

DMT shifts brain oscillations away from criticality toward a subcritical state, and this shift correlates with the intensity of self-dissolution.

observational cohort

Points of agreement

  • Classic psychedelics (LSD, psilocybin, DMT, ayahuasca) consistently induce ego dissolution, which is a core feature of the psychedelic experience.
  • Ego dissolution is linked to specific neural changes: increased global connectivity, decoupling of the default-mode network, and altered effective connectivity between resting-state networks.
  • The experience of ego dissolution is multidimensional, with both positive and negative valences depending on context and neurochemical factors.
  • Ego dissolution is associated with lasting positive outcomes, such as increased nature relatedness, improved well-being, and therapeutic benefits in depression.

Conflicts

  • One study (14108) found that higher medial prefrontal glutamate is associated with negative ego dissolution, while lower hippocampal glutamate is associated with positive ego dissolution, indicating valence-dependent neurochemistry.
  • Another study (25504) found that ayahuasca and DMT produce higher dissolution scores than LSD and psilocybin on some factors, but all substances yield equivalent scores on insight and pleasure, suggesting substance-specific differences in ego dissolution profiles.
  • A theoretical paper (30836) suggests contemplative practices reduce ego dissolution, while other studies show meditation can induce DPDR-like states (29979), indicating that the relationship between contemplative practice and ego dissolution is complex and context-dependent.

Gaps

  • Most neuroimaging studies have small sample sizes (15-35 participants), limiting generalizability and statistical power.
  • Long-term durability of ego dissolution-related changes and their causal role in therapeutic outcomes are not well established.
  • The role of set and setting in moderating ego dissolution is acknowledged but not systematically studied across different contexts and populations.
  • Comparative studies across different psychedelics and doses are limited, and the specific neural mechanisms differentiating positive from negative ego dissolution experiences remain unclear.
Browse these studies in the library
How we analyze this

This synthesis reads the 15 most-cited and 10 most recent studies whose primary subject is Ego dissolution, up to 25 in all. The most-cited set anchors the established evidence, and the recent set surfaces work that is too new to have gathered citations yet.

A study qualifies only when Ego dissolution or a known alias appears in its title or keywords, so broad reviews that mention it only in passing are left out. Each study is read from its abstract, strongest evidence first, and the summary reports the direction of the results along with any conflicts and gaps.

Ask your own question in the Research Synthesis Tool

341 articles · 146 from the last two years · 74,670 participants across 173 studies reporting sample size

Common study designs

review 28 case study 10 observational cohort 31 cross-sectional survey 24 theoretical or philosophical paper 73

Research

Synthesize the evidence → Search all →

A Cross-Sectional Survey on Depersonalization/Derealization and Meditation-Induced Alterations of the Self

Erola Pons, Julieta Galante, Axel Lindner preprint

Meditation can trigger states phenomenologically similar to depersonalization/derealization (DPDR), but these experiences are typically rated as more positive, welcome, and spiritually meaningful than DPDR triggered by trauma, stress, or cannabis. In a cross-sectional survey comparing 60 people whose DPDR-like experiences came from meditation with 61 whose came from other triggers, the two groups scored similarly on the Cambridge Depersonalisation Scale but differed on measures of mysticism, ego dissolution, challenging experiences, and mindfulness. Most participants in both groups described their experiences as mixed, yet the meditation group rated them as much more positive. The findings suggest that contemplative approaches could inform clinical support for DPDR and that guidance is needed within meditation settings.

DOI: 10.31234/osf.io/6kyz9_v1

Exploring the Foundations of the Minimal Self: A Theoretical Synthesis

Amber Bunting (18023278)

The minimal self is the basic, pre-reflective sense of being a subject of experience. This thesis provides a theoretical foundation for studying the minimal self by identifying and organizing existing and potential frameworks. A scoping review categorized mechanistic theories, highlighting a trend toward predictive models and revealing definitional variations. The work then proposes a method to refine theories by using insights from psychedelic ego-dissolution and meditative non-dual awareness—both considered genuine disruptions of the minimal self. This approach helps distinguish self-related from self-specifying data and separate enabling conditions from core mechanisms in neuroimaging. Three testable hypotheses and recommendations for future experimental studies are offered.

DOI: 10.25949/25286464.v1 Full text

Ketamine-induced pleasant but not unpleasant dissociation is linked to the functional connectivity profile of the posteromedial cortex

Zümrüt Duygu Sen, Nitin Sharma, Lena Vera Danyeli et al. preprint

Ketamine causes temporary dissociative experiences alongside its rapid therapeutic effects. This study examined whether pleasant and unpleasant dissociations can be predicted by functional connectivity of the posteromedial cortex (PMC) in 35 male participants during ultrahigh-field MRI. Pleasant dissociation (oceanic boundlessness) was predicted by PMC connections with control network regions at baseline and during infusion, and additionally with default mode network regions during infusion. Unpleasant dissociation (anxious ego dissolution) could not be predicted by PMC connectivity. The findings suggest distinct brain mechanisms for pleasant versus unpleasant dissociations, and that PMC connectivity changes may be a shared neural feature of dissociation from both ketamine and psychedelics.

DOI: 10.31234/osf.io/eadr2

Development and validation of a short-form (6-item) version of the clinician-administered dissociative states scale (CADSS-SF).

European journal of psychotraumatology December 1, 2026 V Ursule Taujanskaite, Sunjeev K Kamboj

A 6-item short form of the Clinician Administered Dissociative States Scale (CADSS-SF) was developed using data from three studies of nitrous oxide in 229 healthy volunteers, then validated in 80 separate participants. The single-factor scale, composed of derealization and depersonalization items, showed excellent model fit and internal consistency (omega = 0.87), correlated strongly with the full 19-item CADSS (r ≥ 0.88), and moderately with a measure of psychotomimesis (r = 0.63). The CADSS-SF enables rapid, repeated assessment of dissociation during drug intoxication without disrupting the experience, but primarily captures derealization and depersonalization and requires further validation beyond drug-induced dissociation in healthy populations.

DOI: 10.1080/20008066.2026.2678662 Full text Ketamine Cadss Disociación Dissociation +4

O BARDO SOMÁTICO: A EXPERIENCIAÇÃO DE MORTES, RENASCIMENTOS E A CONQUISTA DA GRAÇA ATRAVÉS DO ENRAIZAMENTO ORIENTADO E DA REGULAÇÃO NERVOSA

Zenodo (CERN European Organization for Nuclear Research) July 14, 2026 Sandra Regina (Sandra Anaki - Deva Yasha) Pereira

The article proposes a theoretical-practical correlation between the transition of consciousness described in the Tibetan Book of the Dead (Bardo Thodol) and Alexander Lowen's concepts of grounding and bodily grace in Bioenergetic Analysis. It argues that Bardo states—constant cycles of death and rebirth—are not merely metaphysical events but continuous somatic processes occurring in the musculature, respiration, and the body's energetic flow. The article analyzes nervous system dysregulation that arises when seeking altered states of consciousness without proper biological and somatic grounding. It proposes therapeutic body management through containment, oil application, and touch as the indispensable somatic foundation for returning to reality, serving as a basis for integrated, ethical, and transdisciplinary work with psychotherapy and psychiatry.

DOI: 10.5281/zenodo.21366901 Tantra Taste Humanities Art +1

Dissociative Catalysts of Coherence Loss: Impairment of World-Model Maintenance in Cognitive Constructivism

Zenodo (CERN European Organization for Nuclear Research) July 14, 2026 Tenzin Trepp

Dissociative substances like ketamine and PCP disrupt the brain's ability to maintain a coherent world-model—the high-level integration that normally binds perception, selfhood, and meaning—rather than merely distorting conscious content. This paper proposes a Cognitive Constructivist framework that classifies altered states by their effects on model dynamics: tightening (anxiety), loosening (psychedelics), and destabilization (dissociatives). Dissociatives weaken long-range neural integration and thalamocortical coordination while preserving basic sensory awareness, leading to experiences of depersonalization and loss of meaning. The authors argue that dissociation superficially resembles mystical pure consciousness but lacks the meta-awareness and integration of genuine contemplative states. Clinically, dissociative interventions like ketamine for depression may work by resetting rigid pathological models, requiring deliberate therapeutic reconstruction of meaning afterward.

DOI: 10.5281/zenodo.21352469 Anxiety Consciousness Dissociation chemistry Perception +12

On Thinking - An Introspective View Into The Symbology Behind Duality

Zenodo (CERN European Organization for Nuclear Research) July 12, 2026 Jamison Johsnon

Duality—such as science and religion, analysis and intuition—is not opposition but two ways of attending to one reality. The felt task of perceiving wholeness corresponds, by metaphor and possibly measurable correlation, to integrating the brain's two hemispheres across the corpus callosum. Drawing on split-brain research, hemispheric asymmetry, fractal aesthetics, Jungian psychology (Persona, Ego, Self, individuation, and the mandala as a symbol of wholeness), the pineal gland as Descartes's seat of the soul and a symbol of the balancing Ego, recent neuroscience of endogenous DMT and the dying brain, and the neuroscience of ego-dissolution, the essay holds a deliberate seam between empirical finding and symbolic interpretation. It closes on quieting the self-narrating mind as a path to balance and inner peace.

DOI: 10.5281/zenodo.21322045 Introspection Metaphor Symbol formal Qualia +13

Minimal Public Formulation of the Projected Presence Framework Conditions, Distinctions, Failure Criteria, and Empirical Readiness for Future Consciousness Research

Zenodo (CERN European Organization for Nuclear Research) July 9, 2026 Karel Hrubec

Consciousness is not explained solely by organismic regulation; the hard problem begins when stabilized organismic access becomes lived presence. This theoretical note consolidates the Projected Presence Framework into a criticizable conceptual architecture, distinguishing organismic regulation, stabilized access, projected presence, selfhood, will, dogma, correction resistance, and feedback regulation to prevent category collapse between functional access, lived presence, self-modeling, and agency. The framework is positioned against access consciousness, phenomenal consciousness, Global Neuronal Workspace, predictive processing, self-model theory, illusionism, embodied cognition, and neurophenomenology.

DOI: 10.5281/zenodo.21281859 Consciousness Embodied cognition Novelty Empirical research +13

The Inside of Consequence: Eigenlage, Internal Un-Invertibility, and the Ethics of Artificial Vulnerability

Zenodo (CERN European Organization for Nuclear Research) July 7, 2026 Arno Henning Rinker

Consciousness is often defined by capacities like perception, memory, or intelligence, but this essay argues that none of these is consciousness itself. Instead, it introduces 'Eigenlage'—the integrated own-situation of a bounded, self-maintaining system where internal condition, vulnerability, action, memory, and future possibilities are causally linked for its continuation. The theory outlines four levels, from Eigenlage as a necessary condition for consciousness attribution to Ethical Eigenlage as a welfare threshold where damage may become harm. A key AI-specific concept is 'internal un-invertibility': a digital system can be externally reversible but internally irreversible in terms of lost time, trust, and continuity. The essay warns that constructing artificial consciousness with valenced vulnerability would create possible suffering, advocating for high AI capability without affective Eigenlage.

DOI: 10.5281/zenodo.21279528 Full text Sentience Attribution Harm Vulnerability computing +9

The Limits of Psychedelic Transformation: Ben Wheatley’s A Field in England (2013)

Green Letters July 7, 2026 Jennifer S. Henke

A Field in England (2013), a British folk horror film, is analyzed for its portrayal of a psychedelic mushroom trip as a tool for ecological awareness. The film builds expectation of a transformative, ego-death experience but ultimately withholds any structural change in violence, control, or mastery over nature. This pessimistic view is reinforced by monochromatic aesthetics, a circular narrative, and landscape construction. The film exposes the fragility of the cultural fantasy of a 'fungal fix' for ecological responsibility.

DOI: 10.1080/14688417.2026.2695980 Field mathematics Limit mathematics Astronomy Philosophy +2