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Altered states of consciousness: all studies

Page 223 of 271: studies 2,221 to 2,230 of 2,708, newest first. Back to the altered states of consciousness overview

Research

Consciousness, brain, neuroplasticity.

Frontiers in Psychology July 10, 2013 Jean Askenasy, Joseph Lehmann

Subjectivity, intentionality, self-awareness and will are major components of consciousness in human beings. Changes in consciousness and its content following different brain processes and malfunction have long been studied. Cognitive sciences assume that brain activities have an infrastructure, but there is also evidence that consciousness itself may change this infrastructure. The two-way...

Neurobiology and clinical implications of lucid dreaming

Medical Hypotheses July 6, 2013 Sérgio Mota-Rolim, John Fontenele Araújo 50 citations

Several lines of evidence converge to the idea that rapid eye movement sleep (REMS) is a good model to foster our understanding of psychosis. Both REMS and psychosis course with internally generated perceptions and lack of rational judgment, which is attributed to a hyperlimbic activity along with hypofrontality. Interestingly, some individuals can become aware of dreaming during REMS, a...

DOI: 10.1016/j.mehy.2013.04.049 (opens in new tab) Lucid dream Psychosis Frontal lobe Consciousness +1

Methoxetamine (MXE) – A Phenomenological Study of Experiences Induced by a “Legal High” from the Internet

Journal of Psychoactive Drugs July 1, 2013 Anette Kjellgren, Kristoffer Jonsson 75 citations

Methoxetamine (MXE), a ketamine analogue, is one of the new "legal highs" sold on the Internet. The aim of this qualitative study was to provide an initial understanding of what characterizes the experiences induced by MXE. Anonymously written reports (33 persons) on the effects of MXE were collected from public Internet forums and analyzed using the Empirical Phenomenological Psychological...

“Seeing” and “feeling” architecture: how bodily self-consciousness alters architectonic experience and affects the perception of interiors

Frontiers in Psychology June 25, 2013 Isabella Pasqualini, J. Llobera, Olaf Blanke

Over the centuries architectural theory evolved several notions of embodiment, proposing in the nineteenth and twentieth century that architectonic experience is related to physiological responses of the observer. Recent advances in the cognitive neuroscience of embodiment (or bodily self-consciousness) enable empirical studies of architectonic embodiment. Here, we investigated how architecture...

Light the Towel: Narrative and the Negotiated Unconscious

June 24, 2013 J. Prendergast

Abstract This investigation is a practice-based inquiry. It takes place in the context of writing and editing a novel manuscript: The earth does not get fat (Prendergast 2012). The unpublished novel manuscript is a fractured narrative, a tale told in multiple first-person voices. One of the problems the writer encountered, as the novel developed, was a problem from the perspective of logic and...

Activation of Serotonin 2A Receptors Underlies the Psilocybin-Induced Effects on Oscillations, N170 Visual-Evoked Potentials, and Visual Hallucinations

Journal of Neuroscience June 19, 2013 Michael Kometer, André Schmidt, Lutz Jäncke et al. 357 citations

Visual illusions and hallucinations are hallmarks of serotonergic hallucinogen-induced altered states of consciousness. Although the serotonergic hallucinogen psilocybin activates multiple serotonin (5-HT) receptors, recent evidence suggests that activation of 5-HT2A receptors may lead to the formation of visual hallucinations by increasing cortical excitability and altering visual-evoked...

'Pseudoneurological' symptoms, dissociation and stress-related psychopathology in healthy young adults.

BMC Psychiatry May 25, 2013 Petr Bob, Petra Selesova, Jiri Raboch et al.

Background: Somatoform dissociation is a specific form of dissociation with somatic manifestations represented in the form of 'pseudoneurological' symptoms due to disturbances or alterations of normal integrated functions of consciousness, memory or identity mainly related to trauma and other psychological stressors. With respect to the distinction between psychological and somatoform...

Case Study of Ecstatic Meditation: fMRI and EEG Evidence of Self-Stimulating a Reward System

Neural Plasticity May 22, 2013 Michael R. Hagerty, Julian Isaacs, Leigh Brasington et al.

We report the first neural recording during ecstatic meditations called jhanas and test whether a brain reward system plays a role in the joy reported. Jhanas are Altered States of Consciousness (ASC) that imply major brain changes based on subjective reports: (1) external awareness dims, (2) internal verbalizations fade, (3) the sense of personal boundaries is altered, (4) attention is highly...

Neurotheology-Matters of the Mind or Matters that Mind?

Journal of Clinical and Diagnostic Research May 8, 2013 Samarth Shukla, Sourya Acharya, Devendra Rajput

Understanding the true nature of an individual, be it a child or an adult, a male or a female, is almost an impossible task. The vast abyss like behaviour of a human mind is virtually unfathomable. Yet, with the advent of neurosciences, it can be said that we, as the medical fraternity, have been in a position to decipher a considerable part of the human mind. This review accepts the fact that...

“Not to Be Aware Anymore”: Indigenous Sumatran Ideas and Shamanic Experiences of Changed States of Awareness/Consciousness

Anthropology of Consciousness May 1, 2013 Nathan Porath

AbstractAnthropologists working on altered states of consciousness (ASC) have suggested that we should do away with psychologizing concepts and use people's own terms for these experiences. With material drawn from the Orang Sakai of Sumatra this paper shows that practitioners who utilizeASCdo recognize the alteration of states of awareness as preconditions for numinous interactions. Also...