# Methods of Inducing Altered States of Consciousness

### **Pharmacological Methods**

**Psychedelics (Psilocybin, LSD, Ayahuasca/DMT)**\
Act primarily as **5-HT₂A receptor agonists**, disrupting **Default Mode Network (DMN)** integrity and enhancing **neural plasticity**. These compounds often induce profound alterations in self-perception, emotional release, and cognitive flexibility.

**Empathogens (MDMA, Mescaline)**\
Increases **serotonin, dopamine, and oxytocin**, producing heightened empathy, emotional openness, and interpersonal trust. Some of these molecules are in clinical trials as an adjunct for **trauma and PTSD therapy** due to its capacity to safely access difficult emotional material.

**Ketamine**\
Functions as an **NMDA receptor antagonist**, rapidly stimulating **synaptogenesis** and enhancing **brain-derived neurotrophic factor (BDNF)**. Known for its **fast-acting antidepressant effects**, ketamine provides a neurobiological “reset” for treatment-resistant mood disorders.

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### **Meditative Practices**

Forms such as **focused attention**, **open monitoring**, **transcendental**, and **loving-kindness meditation** reliably induce altered states marked by distinctive changes in **DMN activity** and **brain-wave oscillations**. Long-term practice fosters **emotional regulation, attentional control,** and **reduced stress reactivity**, demonstrating measurable neuroplastic adaptation.

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### **Breathwork**

Techniques such as **Holotropic Breathwork** and **conscious hyperventilation** can induce ASCs proportional to the reduction in **CO₂** levels, leading to visionary or cathartic experiences.\
Gentler forms like **SOMABreath®**, **box breathing** or the **Wim Hof Method** regulate the **autonomic nervous system**, balancing sympathetic activation with parasympathetic recovery.

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### **Sensory Deprivation and Flotation**

**Float tanks** and similar sensory isolation environments dramatically reduce external input, allowing the **DMN** to quiet and inner awareness to expand. Users often report **hallucinatory imagery**, deep relaxation, and reduced stress markers such as cortisol.

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### **Hypnosis**

Through **guided induction**, hypnosis transitions brain activity from **beta** to **alpha and theta** states, accompanied by **prefrontal cortex disengagement** and increased **suggestibility**. It has proven effective for **pain management**, **habit change**, and **anxiety reduction** when applied therapeutically.

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### **Other Pathways**

**Exercise** can elicit “**runner’s high**,” linked to **endorphins** and **transient hypofrontality**, fostering euphoria and flow.\
**Dance, fasting, drumming,** and **temperature extremes** represent **cross-cultural traditions** of entering altered states—each manipulating physiology, rhythm, and sensory input to access expanded awareness.<sup>1-2</sup>

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### References

1. Vaitl, D.; Birbaumer, N.; Gruzelier, J.; Jamieson, G. A.; Kotchoubey, B.; Kubler, A.; Lehmann, D.; Miltner, W. H.; Ott, U.; Putz, P.; et al. Psychobiology of altered states of consciousness. *Psychol. Bull.* 2005, *131* (1), 98-127. DOI: 10.1037/0033-2909.131.1.98  From NLM Medline.
2. Carhart-Harris, R. L.; Goodwin, G. M. The Therapeutic Potential of Psychedelic Drugs: Past, Present, and Future. *Neuropsychopharmacology* 2017, *42* (11), 2105-2113. DOI: 10.1038/npp.2017.84  From NLM Medline.