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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 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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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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呼吸工作诱导的迷幻体验调节神经动态.

Evan Lewis-Healey1, Enzo Tagliazucchi2,3,4, Andres Canales-Johnson1,5

  • 1Cambridge Consciousness and Cognition Lab, Department of Psychology, Downing Place, University of Cambridge, Cambridge, CB2 3EB, United Kingdom.

Cerebral cortex (New York, N.Y. : 1991)
|August 27, 2024
PubMed
概括
此摘要是机器生成的。

呼吸工作,或故意呼吸,可以诱导改变意识状态 (ASC). 这项研究发现,呼吸过程中的"类似迷幻"体验与增加的神经复杂性相关,这表明心灵和大脑活动之间存在联系.

关键词:
意识的改变状态的意识.呼吸工作 呼吸工作神经复杂性的神经复杂性神经现象学神经现象学迷幻药物 迷幻药物是一种精神药物.

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科学领域:

  • 神经科学是一个神经科学.
  • 心理学 心理学 心理学
  • 意识研究 意识研究

背景情况:

  • 呼吸工作涉及故意呼吸以达到改变意识状态 (ASC).
  • 呼吸的神经和主观动力学仍然没有得到充分的研究.
  • 了解这些动态可以提供对意识和幸福感的见解.

研究的目的:

  • 为了研究呼吸的现象学和神经动力学.
  • 探索主观经验与呼吸过程中的大脑活动之间的关系.
  • 识别通过呼吸工作诱导的意识状态改变的神经相关物.

主要方法:

  • 利用时间体验追踪来捕捉主观体验的动态.
  • 使用低密度的便携式脑电图 (EEG) 设备进行神经记录.
  • 分析了来自14名新手参与者在301个不同持续时间的呼吸练习会上的数据.

主要成果:

  • "类似于迷幻的"主观体验与增加的神经Lempel-Ziv复杂性有关.
  • 探索性分析显示,功率光谱密度的无周期指数也显示了类似的关联.
  • 非线性神经特征,包括复杂性和无周期指数,映射出积极的和类似于迷幻的体验.

结论:

  • 呼吸工作诱导神经活动的可测量变化.
  • 神经复杂性和非周期指数是呼吸引起的改变状态的潜在生物标志物.
  • 这种神经现象学方法为研究意识提供了一个新的框架.