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Altered states of consciousness: all studies

Page 84 of 271: studies 831 to 840 of 2,708, newest first. Back to the altered states of consciousness overview

Research

Differential engagement of thalamic nuclei orchestrates consciousness states across anesthesia, sleep, and disorders of consciousness.

Communications Biology December 18, 2025 Fa Lu, Juan Wang, Xuewei Qin et al.

Consciousness alterations occur across various states, encompassing changes in both arousal and awareness. The contributions of thalamic nuclei of consciousness remain incompletely understood. We analyzed fMRI data across general anesthesia (propofol N = 12, sevoflurane N = 12), disorders of consciousness (DoC) (minimally conscious state N = 9, unresponsive wakefulness syndrome N = 9), and...

Perspectives on Consciousness

December 16, 2025

A scientific exploration of consciousness through the lens of subjective experience by leading interdisciplinary scholars. This volume brings together international scholars from neuroscience, mathematics, physics, neurophenomenology, psychology, cognitive sciences, philosophy, and the study of Indian and Buddhist contemplative traditions. The book explores fundamental questions such as: Is...

Meditation: From Self-Regulation to Ego-Dissolution

The MIT Press eBooks December 16, 2025 Ulrich Ott

elucidate the brain dynamics of non-ordinary experiences like "non-duality" and "egodissolution" by combining phenomenological assessment with modern brain imaging technology.In this chapter, I describe (1) typical features of mystical experiences (see glossary);(2) situations, personality traits, and methods that facilitate their occurrence; and (3) recent findings regarding their pos si ble...

DOI: 10.7551/mitpress/14600.003.0015 (opens in new tab) Full text (opens in new tab) Work physics Identification biology Product mathematics

My Peregrinations through Varela’s Neurophenomenological Horizon Toward the Mathematics of Subjective Experience

The MIT Press eBooks December 16, 2025 David Rudrauf

The chapter you are about to read is much about how other minds played a role in shaping my views and theories about consciousness.It only seemed natu ral to me from the outset that the phenomenology of subjective experience should play a pivotal role in a scientific theory of consciousness.But my intuitions found firmer methodological ground in my brief yet meaningful, and retrospectively...

DOI: 10.7551/mitpress/14600.003.0017 (opens in new tab) Full text (opens in new tab) Horizon Calculus dental Mathematics education Epistemology

Consciousness and Cognition: A Personal Journey from Function to Phenomenology

The MIT Press eBooks December 16, 2025 Narayanan Srinivasan

measures like accuracy and reaction time and move toward reports about experience that are simple but not necessarily objectively verifiable as accurate.I will discuss studies demonstrating the effect of attention on visual awareness and how meditation practice could influence our perceptual experience.Fi nally, I will discuss the importance of control and prediction and how a hierarchical...

DOI: 10.7551/mitpress/14600.003.0025 (opens in new tab) Full text (opens in new tab) Phenomenology philosophy Consciousness Function biology Epistemology +2

Towards therapeutic paths with mindfulness meditation–based and psychedelics assisted psychotherapies in PTSD: Randomized controlled trials systematic review and meta-analysis

Cortica December 15, 2025 Solène Maeder, Cherine Fahim, Chantal Martin-Soelch

The purpose of this study was to compare mindfulness meditation-based interventions (MMBIs) and psychedelic-assisted psychotherapies (PAP) in PTSD and examine altered-state mediators as a shared mechanism. Following PRISMA 2020 guidelines, PubMed, Web of Science, and EBSCOhost were systematically searched for randomized controlled trials (RCTs) published through January 2024. Trials reporting...

DOI: 10.26034/cortica.2025.8925 (opens in new tab) Mindfulness Randomized controlled trial Psychological intervention Intervention counseling +9

From Spirit Guides to Machine Elves: A Cultural and Phenomenological History of Psychedelic Entity Encounters

Zenodo (CERN European Organization for Nuclear Research) December 15, 2025 preprint

Encounters with seemingly autonomous non-human entities are among the most striking and consistently reported phenomena associated with psychedelic states, particularly those induced by N,N-dimethyltryptamine (DMT). In contemporary discourse, these encounters are frequently described through the archetype of the “machine elf,” a term popularized by ethnobotanist Terence McKenna in the late...

Effects of Glycine on Mismatch Negativity and the Underlying Theta-Band Signature in the Ketamine Model of Schizophrenia in Healthy Men.

Schizophrenia Bulletin December 14, 2025 Stjepan Curic, Moritz Haaf, Darius Zokai et al.

Pre-attentive information processing deficits are associated with poor outcomes in schizophrenia. The auditory mismatch negativity (MMN), observed when an auditory signal changes, is reduced in schizophrenia, related to glutamatergic dysfunction and is considered a response biomarker. We hypothesized that glycine, an N-methyl-d-aspartate receptor (NMDAR) coagonist, could reverse the...

Regional specificity of the cingulate cortex thickness association with the intensity of psilocybin experience: a replication study

Psychopharmacology December 13, 2025 David Greguš, Jaroslav Hlinka, Filip Tylš et al.

Individual variability in psilocybin response is a major challenge for psychedelic-assisted therapy, with structural brain features potentially serving as predictive biomarkers. (Lewis et al. Biomedicines 8(2):34 2020) reported that rostral anterior cingulate cortex thickness predicted emotional experiences under psilocybin, suggesting cortical morphometry as a marker of psychedelic...

Guided Imagery and Music – Historiasta nykyaikaan

Musiikkiterapia December 12, 2025 Jaana Lehikoinen

Johdanto BMGIM (Bonny Method of Guided Imagery and Music), josta käytetään myös nimitystä GIM-terapia, on musiikin kuunteluun ja mielikuvatyöskentelyyn pohjautuva musiikkipsykoterapiamenetelmä, jonka on kehitellyt Yhdysvalloissa 1970-luvulla Helen Lindquist Bonny.GIM-terapiassa asiakas kuuntelee virittäytymisen myötä saavutetussa muuntuneessa tietoisuuden tilassa (ASC, altered state of...