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Related Concept Videos

Hallucinogens and Psychedelics01:27

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Hallucinogens are psychoactive substances that profoundly alter perceptual experiences, generating unreal visual and sensory images. Often referred to as psychedelic drugs — a term derived from the Greek words "psyche" (mind) and "delos" (revealing) — these substances include marijuana and lysergic acid diethylamide (LSD), among others. These drugs vary in intensity and effects.
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Altered states of consciousness represent significant deviations from one's normal mental state. These deviations can range from subtle changes in awareness to profound transformations in perception, thought processes, and sensory experiences. Altered states of consciousness can be triggered by various factors, including drug use, meditation, hypnosis, illness, or even intense fatigue.
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Schizophrenia is a complex psychiatric disorder characterized by a range of symptoms that significantly impact cognition, behavior, and emotional regulation. Among these, the positive symptoms stand out as they involve the addition or exaggeration of normal mental functions, deviating markedly from typical behavior and perception. Hallucinations and delusions are prominent positive symptoms, each profoundly affecting the individual's experience of reality.
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Hallucinogens, also known as psychedelic drugs, are a class of substances known for their ability to alter perception, cognition, and emotions. Despite their profound effects on the mind, these drugs are non-addictive, setting them apart from many other abused substances. The mechanism of action of these drugs lies in their impact on the 5-HT2A receptor in the brain. Upon activation, this receptor couples to Gq-type G proteins, triggering a cascade that releases intracellular calcium. This...
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Related Experiment Video

Updated: Oct 15, 2025

Virtual Hand with Ambiguous Movement between the Self and Other Origin: Sense of Ownership and 'Other-Produced' Agency
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Arts-based methods for hallucination research.

Katie Melvin1,2,3, Colleen P E Rollins4, John Cromby3

  • 1Department of Neuroscience, Psychology and Behaviour, University of Leicester, Leicester, UK.

Cognitive Neuropsychiatry
|October 28, 2021
PubMed
Summary
This summary is machine-generated.

Arts-based research methods (ABRM) offer novel insights into hallucination experiences. Incorporating ABRM enhances understanding of the multimodal and embodied nature of hallucinations, making them more accessible for research.

Keywords:
Hallucinationarts-based research methodsneurocognitivetheory

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Arts-based research

Background:

  • Current neurocognitive models of hallucinations struggle to capture subjective experiences.
  • Arts-based research methods (ABRM) can depict complex phenomena that cognitive neuropsychiatry aims to explain.

Purpose of the Study:

  • To investigate how ABRM can advance hallucination research and theories.
  • To explore the lived experiences of hallucinations in psychiatric and neurological populations using ABRM.

Main Methods:

  • A multiple case study design was employed.
  • Two empirical ABRM studies were analyzed, utilizing participant-generated artwork and artist collaborations alongside interviews.

Main Results:

  • ABRM revealed hallucinations as multimodal, embodied experiences situated within personal circumstances.
  • Artwork generation facilitated disclosure, self-reflection, and clarification of hallucination details.
  • Findings enrich neurocognitive models by detailing the multimodal and embodied aspects of hallucinations.

Conclusions:

  • ABRM enhance the visibility, tangibility, and accessibility of hallucination experiences.
  • Integrating ABRM can contribute to the development of more comprehensive neurocognitive models of hallucinations.