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Toward a neurophysiological foundation for altered states of consciousness

  • Shadab Tabatabaeian (a1) and Carolyn Dicey Jennings (a1)


Singh's cultural evolutionary theory posits that methods of inducing shamanic altered states of consciousness differ, resulting in profoundly different cognitive states. We argue that, despite different methods of induction, altered states of consciousness share neurophysiological features and cause shared cognitive and behavioral effects. This common foundation enables further cross-cultural comparison of shamanic activities that is currently left out of Singh's theory.



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Batty, M. J., Bonnington, S., Tang, B. K., Hawken, M. B. & Gruzelier, J. H. (2006) Relaxation strategies and enhancement of hypnotic susceptibility: EEG neurofeedback, progressive muscle relaxation and self-hypnosis. Brain Research Bulletin 71(1–3):):8390.
Benedek, M., Schickel, R. J., Jauk, E., Fink, A. & Neubauer, A. C. (2014) Alpha power increases in right parietal cortex reflects focused internal attention. Neuropsychologia 56:393400.
Boly, M., Phillips, C., Tshibanda, L., Vanhaudenhuyse, A., Schabus, M., Dang-Vu, T. T., Moonen, G., Hustinx, R., Maquet, P. && Laureys, S. (2008) Intrinsic brain activity in altered states of consciousness. Annals of the New York Academy of Sciences 1129(1):119–29.
Brewer, J. A., Worhunsky, P. D., Gray, J. R., Tang, Y. Y., Weber, J. & Kober, H. (2011) Meditation experience is associated with differences in default mode network activity and connectivity. Proceedings of the National Academy of Sciences USA 108(50):20254–59.
Buckner, R. L., Andrews-Hanna, J. R. & Schacter, D. L. (2008) The brain's default network. Annals of the New York Academy of Sciences 1124(1):138.
Cahn, B. R. & Polich, J. (2006) Meditation states and traits: EEG, ERP, and neuroimaging studies. Psychological Bulletin 132(2):180211. doi:10.1037/0033-2909.132.2.180.
Carhart-Harris, R. L., Erritzoe, D., Williams, T., Stone, J. M., Reed, L. J., Colasanti, A., Tyacke, R. J., Leech, R., Malizia, A. L., Murphy, K. & Hobden, P. (2012) Neural correlates of the psychedelic state as determined by fMRI studies with psilocybin. Proceedings of the National Academy of Sciences USA 109(6):2138–43.
Carhart-Harris, R. L., Muthukumaraswamy, S., Roseman, L., Kaelen, M., Droog, W., Murphy, K., Tagliazucchi, E., Schenberg, E. E., Nest, T., Orban, C., Leech, R., Williams, L. T., Williams, T. M., Bolstridge, M., Sessa, B., McGonigle, J., Sereno, M. I., Nichols, D., Hellyer, P. J., Hobden, P., Evans, J., Singh, K. D., Wise, R. G., Curran, H. V., Feilding, A. & Nutt, D. J. (2016) Neural correlates of the LSD experience revealed by multimodal neuroimaging. Proceedings of the National Academy of Sciences USA 113(17):4853–58. doi:10.1073/pnas.1518377113.
Carter, O. L., Burr, D. C., Pettigrew, J. D., Wallis, G. M., Hasler, F. & Vollenweider, F. X. (2005) Using psilocybin to investigate the relationship between attention, working memory, and the serotonin 1A and 2A receptors. Journal of Cognitive Neuroscience 17(10):1497–508.
Castillo, R. J. (1990) Depersonalization and meditation. Psychiatry 53(2):158–68.
Christoff, K., Gordon, A. M., Smallwood, J., Smith, R. & Schooler, J. W. (2009) Experience sampling during fMRI reveals default network and executive system contributions to mind wandering. Proceedings of the National Academy of Sciences USA 106(21):8719–24.
Cole, M. W., Repovš, G. & Anticevic, A. (2014) The frontoparietal control system: A central role in mental health. The Neuroscientist 20(6):652–64.
Cole, M. W. & Schneider, W. (2007) The cognitive control network: Integrated cortical regions with dissociable functions. Neuroimage 37(1):343–60.
Dahl, C. J., Lutz, A. & Davidson, R. J. (2015) Reconstructing and deconstructing the self: Cognitive mechanisms in meditation practice. Trends in Cognitive Sciences 19(9):515–23.
Danielson, N. B., Guo, J. N. & Blumenfeld, H. (2011) The default mode network and altered consciousness in epilepsy. Behavioural Neurology 24(1):5565.
Dietrich, A. (2003) Functional neuroanatomy of altered states of consciousness: The transient hypofrontality hypothesis. Consciousness and Cognition 12(2):231–56.
Forgays, D. G. & Forgays, D. K. (1992) Creativity enhancement through flotation isolation. Journal of Environmental Psychology 12(4):329–35.
Fox, K. C., Nijeboer, S., Solomonova, E., Domhoff, G. W. & Christoff, K. (2013) Dreaming as mind wandering: Evidence from functional neuroimaging and first-person content reports. Frontiers in Human Neuroscience 7:118.
Geyer, M. A. & Vollenweider, F. X. (2008) Serotonin research: Contributions to understanding psychoses. Trends in Pharmacological Sciences 29(9):445–53.
Gingras, B., Pohler, G. & Fitch, W. T. (2014) Exploring shamanic journeying: Repetitive drumming with shamanic instructions induces specific subjective experiences but no larger cortisol decrease than instrumental meditation music. PLoS ONE 9(7):e102103.
Hasenkamp, W., Wilson-Mendenhall, C. D., Duncan, E. & Barsalou, L. W. (2012) Mind wandering and attention during focused meditation: A fine-grained temporal analysis of fluctuating cognitive states. Neuroimage 59(1):750–60.
Hayashi, M., Morikawa, T. & Hori, T. (1992) EEG alpha activity and hallucinatory experience during sensory deprivation. Perceptual and Motor Skills 75(2):403–12.
Hove, M. J., Stelzer, J., Nierhaus, T., Thiel, S. D., Gundlach, C., Margulies, D. S., Van Dijk, K., Turner, R., Keller, P. E. & Merker, B. (2016) Brain network reconfiguration and perceptual decoupling during an absorptive state of consciousness. Cerebral Corte 26:3116–24. doi:10.1093/cercor/bhv137.
Iwata, K., Nakao, M., Yamamoto, M. & Kimura, M. (2001) Quantitative characteristics of alpha and theta EEG activities during sensory deprivation. Psychiatry and Clinical Neurosciences 55(3): 191–92.
Kjellgren, A. (2003) The experience of flotation – REST (restricted environmental stimulation technique): Consciousness, creativity, subjective stress, and pain. University Press.
Kjellgren, A., Lyden, F. & Norlander, T. (2008) Sensory isolation in flotation tanks: Altered states of consciousness and effects on well-being. The Qualitative Report 13(4):636–56.
Lutz, A., Slagter, H. A., Dunne, J. D. & Davidson, R. J. (2008) Attention regulation and monitoring in meditation. Trends in Cognitive Sciences 12(4):163–69.
Mason, O. J. & Brady, F. (2009) The psychotomimetic effects of short-term sensory deprivation. The Journal of Nervous and Mental Disease 197(10):783–85.
Menon, V. & Uddin, L. Q. (2010) Saliency, switching, attention and control: A network model of insula function. Brain Structure and Function 214:655–67.
Muthukumaraswamy, S. D., Carhart-Harris, R. L., Moran, R. J., Brookes, M. J., Williams, T. M., Errtizoe, D., Sessa, B., Papadopoulos, A., Bolstridge, M., Singh, K. D., Feilding, A., Friston, K. J. & Nutt, D. J. (2013) Broadband cortical desynchronization underlies the human psychedelic state. The Journal of Neuroscience 33:15171–83. doi:10.1523/JNEUROSCI.2063-13.2013.
Neher, A. (1962) A physiological explanation of unusual behavior in ceremonies involving drums. Human Biology 34(2):151–60.
Oohashi, T., Kawai, N., Honda, M., Nakamura, S., Morimoto, M., Nishina, E. & Maekawa, T. (2002) Electroencephalographic measurement of possession trance in the field. Clinical Neurophysiology 113(3):435–45.
Palhano-Fontes, F., Andrade, K. C., Tofoli, L. F., Santos, A. C., Crippa, J. A. S., Hallak, J. E., Ribeiro, S. & de Araujo, D. B. (2015) The psychedelic state induced by ayahuasca modulates the activity and connectivity of the default mode network. PLoS ONE 10(2):e0118143.
Raichle, M. E., MacLeod, A. M., Snyder, A. Z., Powers, W. J., Gusnard, D. A. & Shulman, G. L. (2001) A default mode of brain function. Proceedings of the National Academy of Sciences USA 98(2):676–82.
Seeley, W. W., Menon, V., Schatzberg, A. F., Keller, J., Glover, G. H., Kenna, H., Reiss, A. L. & Greicius, M. D. (2007) Dissociable intrinsic connectivity networks for salience processing and executive control. Journal of Neuroscience 27(9):2349–56.
Smallwood, J., Brown, K. S., Tipper, C., Giesbrecht, B., Franklin, M. S., Mrazek, M. D., Carlson, J. M. & Schooler, J. W. (2011) Pupillometric evidence for the decoupling of attention from perceptual input during offline thought. PLoS ONE 6(3):e18298. doi:10.1371/journal.pone.0018298.
Smallwood, J., McSpadden, M. & Schooler, J. W. (2007) The lights are on but no one's home: Meta–awareness and the decoupling of attention when the mind wanders. Psychonomic Bulletin and Review 14(3):527–33.
Speth, J., Speth, C., Kaelen, M., Schloerscheidt, A. M., Feilding, A., Nutt, D. J. & Carhart-Harris, R. L. (2016) Decreased mental time travel to the past correlates with default-mode network disintegration under lysergic acid diethylamide. Journal of Psychopharmacology 30(4): 344–53.
Spreng, R. N., Stevens, W. D., Chamberlain, J., Gilmore, A. W. & Schacter, D. L. (2010) Default network activity, coupled with the frontoparietal control network, supports goal-directed cognition. NeuroImage 53:303–17.
Suedfeld, P. (1980) Restricted environmental stimulation: Research and clinical applications. Wiley.
Suedfeld, P. & Eich, E. (1995) Autobiographical memory and affect under conditions of reduced environmental stimulation. Journal of Environmental Psychology 15:321–26.
Tagliazucchi, E., Roseman, L., Kaelen, M., Orban, C., Muthukumaraswamy, S. D., Murphy, K., Laufs, H., Leech, R., McGonigle, J., Crossley, N., Bullmore, E., Williams, T., Bolstridge, M., Feilding, A., Nutt, D. J. & Carhart-Harris, R. (2016) Increased global functional connectivity correlates with LSD-induced ego dissolution. Current Biology 26(8):1043–50. doi:10.1016/j.cub.2016.02.010.
Takahashi, T., Murata, T., Hamada, T., Omori, M., Kosaka, H., Kikuchi, M., Yoshida, H. && Wada, Y. (2005) Changes in EEG and autonomic nervous activity during meditation and their association with personality traits. International Journal of Psychophysiology 55(2):199207.
Vaitl, D., Birbaumer, N., Gruzelier, J., Jamieson, G., Kotchoubey, B., Kübler, A., Lehmann, D., Miltner, W. H. R., Ott, U., Pütz, P., Sammer, G., Strauch, I., Strehl, U., Wackermann, J. & Weiss, T. (2005) Psychobiology of altered states of consciousness. Psychological Bulletin 131:98127. doi:10.1037/0033-2909.131.1.98.
Vincent, J. L., Kahn, I., Snyder, A. Z., Raichle, M. E. & Buckner, R. L. (2008) Evidence for a frontoparietal control system revealed by intrinsic functional connectivity. Journal of Neurophysiology 100(6):3328–42.
Zuckerman, M. & Cohen, N. (1964) Sources of reports of visual and auditory sensations in perceptual-isolation experiments. Psychological Bulletin 62(1):120.


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