Illustration pairing a fern frond with a neuron and DNA helix — the fern-and-DNA emblem for Soul Search: The Long Walk Home

A curated bibliography of the scientific, historical, and cultural sources referenced in Soul Search: The Long Walk Home. Organized by chapter.

Note on Sources

The reflections in this book arise primarily from lived experience — time spent in wilderness, years of meditation and musical practice, and encounters with altered states of consciousness. Scientific and historical sources were consulted to provide context and to better understand emerging research in neuroscience, psychology, and psychedelic medicine.

The works listed here represent a selection of sources that helped shape the ideas explored in these pages. They are offered as a starting point for readers who wish to explore the scientific and cultural perspectives surrounding these subjects.

  • Selected Sources

    Amoroso, T. (2015). The psychopharmacology of 3,4-methylenedioxymethamphetamine and its role in the treatment of post-traumatic stress disorder. Journal of Psychoactive Drugs, 47(5), 337–344.

    Balíková, M. (2002). Collective poisoning with hallucinogenous herbal tea. Forensic Science International, 128(1–2), 50–52.

    Bouso, J. C., et al. (2012). Personality, psychopathology, life attitudes and neuropsychological performance among ritual users of ayahuasca: A longitudinal study. PLOS ONE.

    Des Rochers, K. Oral History of Waimanu Valley. Online monograph, circa 1990–1991.

    Dos Santos, R. G., et al. (2016). Antidepressant, anxiolytic, and anti-addictive effects of ayahuasca, psilocybin, and lysergic acid diethylamide (LSD): A systematic review. Therapeutic Advances in Psychopharmacology, 6(3), 193–213.

    Grob, C. S., McKenna, D. J., Callaway, J. C., et al. (1996). Human psychopharmacology of hoasca, a plant hallucinogen used in ritual context in Brazil. Journal of Nervous and Mental Disease, 184, 86–94.

    Griffiths, R., et al. (2006). Psilocybin can occasion mystical-type experiences having substantial and sustained personal meaning and spiritual significance. Psychopharmacology.

    Griffiths, R., et al. (2016). Psilocybin in the treatment of depression and anxiety. Journal of Psychopharmacology, 30(12), 1181–1197.

    Halpern, J. H., Sherwood, A. R., Passie, T., Blackwell, K. C., & Ruttenber, A. J. (2008). Evidence of health and safety in American members of a religion who use a hallucinogenic sacrament. Medical Science Monitor, 14, SR15–SR22.

    Hölzel, B. K., et al. (2011). Mindfulness practice leads to increases in regional brain gray matter density. Psychiatry Research.

    Pollan, M. (2015). The Trip Treatment. The New Yorker. View source

    Pollan, M. (2018). How to Change Your Mind: What the New Science of Psychedelics Teaches Us About Consciousness, Dying, Addiction, Depression, and Transcendence. New York: Penguin Press.

    Riba, J., et al. (2001). Subjective effects and tolerability of ayahuasca in healthy volunteers. Psychopharmacology, 154, 85–95.

    Riba, J., Valle, M., Urbano, G., et al. (2003). Human pharmacology of ayahuasca: Subjective and cardiovascular effects, monoamine metabolite excretion, and pharmacokinetics. Journal of Pharmacology and Experimental Therapeutics, 306, 73–83.

    Rucker, J. J. H., et al. (2016). Psychedelics in the treatment of unipolar mood disorders: A systematic review. Journal of Psychopharmacology, 30(12), 1220–1229.

    Tafur, J. (2017). The Fellowship of the River: A Medical Doctor's Exploration into Traditional Amazonian Plant Medicine. Phoenix, AZ: Espiritu Books.

    Vollenweider, F. X., & Kometer, M. (2010). The neurobiology of psychedelic drugs: Implications for the treatment of mood disorders. Nature Reviews Neuroscience, 11(9), 642–651.

  • Supporting Sources

    Bangor Daily News (2015). Why the FDA is warning Americans about ibuprofen. View source

    Council on Foreign Relations. Fentanyl and the U.S. Opioid Epidemic. View source

    DEA (2020). Marijuana / Cannabis Drug Fact Sheet. View source

    Frontiers in Psychology (2021). View source

    National Institute on Drug Abuse. View source

    NCBI Research Articles. View source

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