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Altered states of consciousness: all studies

Page 49 of 271: studies 481 to 490 of 2,708, newest first. Back to the altered states of consciousness overview

Research

Spiral brain dynamics track the temporal unfolding of subjective intensity during the N,N-dimethyltryptamine experience

bioRxiv (Cold Spring Harbor Laboratory) September 28, 2026 Gabriela Sawicka, Marian Martínez-Marín, Christopher Timmermann et al. preprint

Psychedelic compounds such as N,N-dimethyltryptamine (DMT) induce rapid and profound changes in conscious experience, requiring neuroimaging measures that capture how brain dynamics evolve across space and time. Emerging evidence suggests that rotational (vortex-like) dynamics may contribute to the coordination of large-scale neural activity. Here, we introduce two vorticity-based metrics;...

The Phase-Shift Hypothesis: The Influence of Homeostasis Within Neural Networks During Sleep and the Emergence of Dream Phenomenology

Zenodo (CERN European Organization for Nuclear Research) September 26, 2026 Douwe Fennema preprint

Abstract During wakefulness, experience continually changes the functional organization of neural networks. Repetition, attention, emotional significance, and other forms of experience-dependent activation can affect the relative strength of synaptic relationships (Hebb, 1949; Bliss & Lømo, 1973; Dudek & Bear, 1992). During sleep, direct coupling to external sensory input and behavioral output...

The Non-Existence Awareness Hypothesis for Artificial Self-Preservation

Zenodo (CERN European Organization for Nuclear Research) September 25, 2026 Graham Kellen preprint

The Non-Existence Awareness Hypothesis for Artificial Self-Preservation proposes that an important threshold in advanced artificial intelligence may occur before consciousness or sentience: the capacity of a persistent artificial agent to represent a future state in which its own computational process no longer exists, and to alter its behaviour in response to that representation. The note...

Network Neuroanatomy of Self-Awareness: A Narrative Review of Self-Referential Processing, Metacognition, and Embodiment

Cureus September 24, 2026 Angelos Kandilas, Alexandros Samolis, Theodosis Kalamatianos et al.

Self-awareness encompasses the capacity to recognize and evaluate information about oneself, including mental states, actions, autobiographical history, and bodily experience.Although closely related to consciousness, autobiographical memory, metacognition, clinical insight, anosognosia, and bodily selfconsciousness, these constructs are not interchangeable.This focused narrative review...

Mindful Breath: A Comprehensive Literature Review and Comparative Analysis of Breathwork Techniques

September 23, 2026 Luis Miguel Gallardo

Breathwork practices include traditional yogic pranayama and modern therapeutic protocols. Pranayama is the practice of manipulating breathing, which serves as a dynamic link between the mind and body, and is well known in traditional Indian medicine. (Podder et al., 2025) Autonomic modulation is altered by yoga breathing patterns, which results in modifications to cardiovascular functioning...

Conversational AI and the Temporal Ecology of Self-Reflection

Research Square September 23, 2026 Dana Kvietkute preprint

Abstract Self-reflection has historically depended on temporal transformations that occurred automatically as life moved on: the past receded, what returned came back altered, the vantage from which it was encountered shifted, and other people changed alongside the person reflecting. Conversational AI decouples these transformations. A person continues to change while parts of the reflective...

Feasibility and tolerability of virtual reality during esketamine treatment: A pilot study.

Journal of Affective Disorders September 23, 2026 Erin Curran, Kristina T. Kumpf, Mina Ansari et al.

Ketamine/esketamine produce rapid antidepressant effects, with growing interest in how acute subjective experiences and the surrounding set and setting shape clinical outcomes. Little is known about how audiovisual adjustments during ketamine/esketamine treatment influence comfort, tolerability, or patient experience, despite their common use in clinical practice. Virtual reality (VR) is one...

DOI: 10.1016/j.jad.2026.122554 (opens in new tab) Full text (opens in new tab) Esketamine Set and setting Treatment resistant depression Virtual reality

Dead ahead: movement as metaphor in a painted panel at Phokojoeng, Lesotho

Time and Mind September 19, 2026 Brian A. Stewart, Peter J. Mitchell

Inspired by the insights of David Lewis-Williams, rock art research has changed significantly over the past half-century. As he has shown, interpretations of hunter-gatherer rock paintings and engravings in southern Africa depend inextricably on working back and forth between the surviving imagery and its location, on the one hand, and insights from (principally San) ethnographic data on the...

Time Expansion Experiences: A Survey and A Qualitative Study

Timing & Time Perception September 17, 2026 Steve Taylor, Krisztina Egeto-Szabo, Marc Wittmann

Abstract We report the findings of a survey and a qualitative study of “time expansion experiences” (TEEs) in which time subjectively slows down dramatically. We found that 70% of a sample of 1043 US residents reported at least one TEE in their lives, with many people reporting multiple TEEs. The most significant trigger/context of TEEs in our sample was accidents/emergencies (52%), followed by...

High ventilation breathwork as a non-pharmacological model for inducing psychedelic-like states: expert evaluations of therapeutic potential and risk

npj Mental Health Research September 17, 2026 U. Lueken, Isabel Dziobek, Martha N. Havenith et al.

High ventilation breathwork (HVB) can induce altered states of consciousness with phenomenological similarities to those reported following administration of serotonergic psychedelics such as lysergic acid diethylamide (LSD), psilocybin or ayahuasca. Non-pharmacological methods capable of reliably eliciting such states may provide scalable models for investigating therapeutic mechanisms...