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Altered states of consciousness: all studies

Page 178 of 271: studies 1,771 to 1,780 of 2,708, newest first. Back to the altered states of consciousness overview

Research

Mechanisms of the breathing contribution to bodily self‐consciousness in healthy humans: Lessons from machine‐assisted breathing?

Psychophysiology March 12, 2020 Sophie Betka, Elisa Canzoneri, Dan Adler et al.

Abstract Previous studies investigated bodily self‐consciousness (BSC) by experimentally exposing subjects to multisensory conflicts (i.e., visuo‐tactile, audio‐tactile, visuo‐cardiac) in virtual reality (VR) that involve the participant's torso in a paradigm known as the full‐body illusion (FBI). Using a modified FBI paradigm, we found that synchrony of visuo‐respiratory stimulation (i.e., a...

Tripping on nothing: placebo psychedelics and contextual factors

Psychopharmacology March 7, 2020 Jay A. Olson, Léah Suissa-Rocheleau, Michael Lifshitz et al. 148 citations

RationaleIs it possible to have a psychedelic experience from a placebo alone? Most psychedelic studies find few effects in the placebo control group, yet these effects may have been obscured by the study design, setting, or analysis decisions.ObjectiveWe examined individual variation in placebo effects in a naturalistic environment resembling a typical psychedelic party.MethodsThirty-three...

DOI: 10.1007/s00213-020-05464-5 (opens in new tab) Nothing Placebo Tripping Clinical psychology +3

The relationship between subjective effects induced by a single dose of ketamine and treatment response in patients with major depressive disorder: A systematic review.

Journal of Affective Disorders March 1, 2020 David S. Mathai, Matthew Meyer, Eric A. Storch et al.

The relationship between ketamine's hallucinogenic- and dissociative-type effects and antidepressant mechanism of action is poorly understood. This paper reviewed the correlation between subjective effects defined by various psychometric scales and observed clinical outcomes in the treatment of patients with Major Depressive Disorder (MDD). Based on PRISMA guidelines, we reviewed the...

Mystical Love: The Universal Solvent

Anthropology of Consciousness March 1, 2020 Charles D. Laughlin, Melanie Takahashi

AbstractThe authors, both anthropologists who study alternative states of consciousness (ASC), explore the psychodynamics of mystical experience (ME). An affect that is a key factor for and integral to the phenomenology of ME is what they term “mystical love.” In many respects, ME refers to ASC that is diametrically opposite to everyday ego‐centered, materialist consciousness. In this article...

Psychedelic Birth: Bodies, Boundaries and the Perception of Pain in the 1970s

Gender & History March 1, 2020 W. Kline 6 citations

‘Why is psychedelic culture dominated by privileged white men?’ asks historian Mike Jay, referring to a recent study of psychedelic users who are more than likely to be college-educated white males.1 This appears logical, given the figureheads (such as Timothy Leary) who attained cult-like status half a century ago. Many today continue to view psychedelics as a symbol of the hedonism of the...

Exploring the Use of Meditation as a Valuable Tool to Counteract Sedentariness.

Frontiers in Psychology February 25, 2020 Marcelo Bigliassi, Romulo Bertuzzi

Some forms of meditation have been recently proposed as effective tools to facilitate the handling of undesired thoughts and reappraisal of negative emotions that commonly arise during exercise-related situations. The effects of meditation-based interventions on psychological responses could also be used as a means by which to increase exercise adherence and counteract the detrimental...

Rostral Anterior Cingulate Thickness Predicts the Emotional Psilocybin Experience

Biomedicines February 18, 2020 Candace R. Lewis, Katrin H. Preller, B. Blair Braden et al. 27 citations

Psilocybin is the psychoactive compound of mushrooms in the psilocybe species. Psilocybin directly affects a number of serotonin receptors, with highest affinity for the serotonin 2A receptor (5HT-2Ar). Generally, the effects of psilocybin, and its active metabolite psilocin, are well established and include a range of cognitive, emotional, and perceptual perturbations. Despite the generality...

Consciousness, science and spirituality: the broad conceptualization of consciousness through the prism of extending to the new physics

Journal of Psychology & Clinical Psychiatry February 11, 2020 Vernon M. Neppe

‘Consciousness’ cannot adequately be conceptualized unless we apply several different prongs. This paper is divided into three sections. A perspective on Consciousness: Improving on the EPIC prongs. Section 1. The 12 prongs of Consciousness: PIERCED MOCKS. Section 2 linked with WH adverbs. The Elusive Mystery Solved: The Gimmel of Consciousness Section 3. Ultimately, Consciousness can be an...

Analysis of brain connectivity during nitrous oxide sedation using graph theory.

Scientific Reports February 11, 2020 Ji-Min Lee, Pil-Jong Kim, Hong-Gee Kim et al.

Nitrous oxide, the least potent inhalation anesthetic, is widely used for conscious sedation. Recently, it has been reported that the occurrence of anesthetic-induced loss of consciousness decreases the interconnection between brain regions, resulting in brain network changes. However, few studies have investigated these changes in conscious sedation using nitrous oxide. Therefore, the present...

Source-level Cortical Power Changes for Xenon and Nitrous Oxide–induced Reductions in Consciousness in Healthy Male Volunteers

Anesthesiology February 6, 2020 Andria Pelentritou, Levin Kuhlmann, John Cormack et al. 15 citations

BACKGROUND: Investigations of the electrophysiology of gaseous anesthetics xenon and nitrous oxide are limited revealing inconsistent frequency-dependent alterations in spectral power and functional connectivity. Here, the authors describe the effects of sedative, equivalent, stepwise levels of xenon and nitrous oxide administration on oscillatory source power using a crossover design to...