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Related Concept Videos

Altered States of Awareness01:06

Altered States of Awareness

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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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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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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.
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High-Level and Low-Level Awareness01:19

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Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
245

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Immersive exposure to simulated visual hallucinations modulates high-level human cognition.

Antonino Greco1, Clara Rastelli2, Andrea Ubaldi3

  • 1Department of Neural Dynamics and Magnetoencephalography, Hertie Institute for Clinical Brain Research, University of Tübingen, Germany; Centre for Integrative Neuroscience, University of Tübingen, Germany; MEG Center, University of Tübingen, Germany.

Consciousness and Cognition
|January 25, 2025
PubMed
Summary

Simulated psychedelic experiences using virtual reality (VR) enhanced cognitive flexibility by reducing task-switching costs. This research explores altered states of consciousness without drugs.

Keywords:
Altered perceptionDeep neural networksDeepDreamHuman cognitionPsychedelicsSimulated hallucinationsVirtual reality

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Computer Science

Background:

  • Psychedelic drugs provide insights into consciousness.
  • Simulating visual hallucinations with virtual reality (VR) and machine learning is technologically advanced.
  • Limited data exists on how simulated hallucinations impact high-level human cognition.

Purpose of the Study:

  • To investigate the effects of simulated psychedelic hallucinations on cognitive processes.
  • To compare cognitive flexibility and linguistic tasks after naturalistic versus simulated psychedelic exposure.
  • To understand altered states of consciousness without pharmacological intervention.

Main Methods:

  • Participants were exposed to VR panoramic videos and their psychedelic counterparts generated by the DeepDream algorithm.
  • Task-switching costs were measured to assess cognitive flexibility.
  • Linguistic automatic association tasks at word and sentence levels were administered.

Main Results:

  • Reduced task-switching costs were observed after simulated psychedelic exposure, indicating increased cognitive flexibility.
  • No significant differences were found in linguistic automatic association tasks between naturalistic and simulated psychedelic exposure.
  • Visually grounded high-level cognitive processes were modulated by simulated hallucination exposure.

Conclusions:

  • Simulated psychedelic exposure can enhance cognitive flexibility without pharmacological intervention.
  • Altered states of consciousness can be studied using VR and AI-generated hallucinations.
  • Findings offer insights into cognitive processes and potential clinical applications in neuroscience.