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Related Concept Videos

Hallucinogens and Psychedelics01:27

Hallucinogens and Psychedelics

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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.
Marijuana, derived from the dried leaves and flowers of the hemp plant, contains...
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Positive Symptoms Schizophrenia: Hallucinations and Delusions01:26

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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.
Hallucinations
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CNS Stimulants: Psychedelic Agents01:22

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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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Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

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Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...
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Altered States of Awareness01:06

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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.
The ingestion of substances like stimulants or hallucinogens leads to chemical alterations in the brain...
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Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

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Schizophrenia is a complex mental health disorder that can manifest with various positive symptoms, including thought, movement, and behavior disorders. These symptoms significantly disrupt cognitive and motor functions, leading to profound effects on an individual's ability to engage with the world.
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes...
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HSV-Mediated Transgene Expression of Chimeric Constructs to Study Behavioral Function of GPCR Heteromers in Mice
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Thinking about hallucinations: why philosophy matters.

Sam Wilkinson1, Huw Green2, Stephanie Hare3

  • 1Sociology, Philosophy and Anthropology, University of Exeter, Exeter, UK.

Cognitive Neuropsychiatry
|December 7, 2021
PubMed
Summary
This summary is machine-generated.

Philosophy enhances hallucinations research by providing insights into lived experiences, theoretical synthesis, and diagnostic critiques. This integration improves understanding of hallucinations and related phenomena.

Keywords:
Hallucinationsphenomenologyphilosophypsychosis

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Area of Science:

  • Neuroscience and Psychiatry
  • Philosophy of Mind
  • Philosophy of Science

Background:

  • Hallucinations research increasingly involves philosophers and philosophical methodologies.
  • Understanding the complex nature of hallucinations requires interdisciplinary approaches.

Purpose of the Study:

  • To present three distinct philosophical approaches enhancing hallucinations research.
  • To demonstrate the value of integrating philosophy into the study of hallucinations.

Main Methods:

  • Review of contributions from phenomenology.
  • Analysis of philosophy of cognitive science.
  • Examination of philosophy of science and psychiatry.

Main Results:

  • Phenomenology offers deep insights into the subjective experience of hallucinations.
  • Philosophy of cognitive science facilitates theoretical synthesis and critical evaluation of new paradigms.
  • Philosophy of science and psychiatry addresses diagnostic and categorization issues.

Conclusions:

  • Philosophy offers diverse methodologies relevant to hallucinations research.
  • Interdisciplinary collaboration with philosophers significantly advances the understanding of hallucinations.