Abstract
Previously, the electroencephalogram (EEG) recorded while listening to repetition of a Sanskrit monosyllable (i.e., OM) was not significantly different from the EEG recorded during control periods. In the present study, fifteen adult volunteers from northern India (all male, average age 25.0 ± 4.9 years) were assessed using monopolar scalp EEG recordings before, during and after (i) silent repetition of a monosyllable (OM), (ii) silent repetition of ‘one’ and (iii) quiet rest. In (i), (ii) and (iii) breathing was not consciously modified. The participants had an average of five years’ experience of focused meditation (dharana), involving awareness directed to the breath. Participants had no prior experience of silent repetition of either ‘OM’ or ‘one’. They were Indian Hindus for whom OM has special spiritual significance, whereas ‘one’ does not. The sessions were on separate days in random order. The absolute and relative energy of theta waves in the EEG recorded at Pz-A2 increased significantly during repetition of OM compared to the preceding state. There were no changes during silent repetition of 'one' or during quiet rest. Increased energy in the theta band while awake reflects a state of relaxation devoid of effort. Hence, during silent repetition of OM alone there were changes suggestive of effortless relaxation.
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The datasets generated during analysis for the current study are available from the corresponding author on reasonable request.
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References
Amo, C., De Santiago, L., Barea, R., López-Dorado, A., & Boquete, L. (2017). Analysis of gamma-band activity from human EEG using empirical mode decomposition. Sensors, 17(5), 989–1003. https://doi.org/10.3390/s17050989
Benson, H., Beary, J. F., & Carol, M. P. (1974). The relaxation response. Psychiatry, 37(1), 37–46. https://doi.org/10.1080/00332747.1974.11023785
Chan, A. S., Sze, S. L., & Cheung, M. C. (2007). Quantitative electroencephalographic profiles for children with autistic spectrum disorder. Neuropsychology, 21(1), 74–81. https://doi.org/10.1037/0894-4105.21.1.74
Dusek, J. A., & Benson, H. (2009). Mind-body medicine: A model of the comparative clinical impact of the acute stress and relaxation responses. Minnesota Medicine, 92(5), 47–50.
Dusek, J. A., Otu, H. H., Wohlhueter, A. L., Bhasin, M., Zerbini, L. F., Joseph, M. G., Benson, H., & Libermann, T. A. (2008). Genomic counter-stress changes induced by the relaxation response. PLoS ONE, 3(7), e2576. https://doi.org/10.1371/journal.pone.0002576
Faul, F., Erdfelder, E., Lang, A. G., & Buchner, A. (2007). G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences. Behavior Research Methods, 39(2), 175–191. https://doi.org/10.3758/bf03193146
Harne, B. P. (2014). Higuchi fractal dimension analysis of EEG signal before and after OM chanting to observe overall effect on brain. International Journal of Electrical and Computer Engineering, 4(4), 585–592.
Harne, B. P., & Hiwale, A. S. (2018). EEG spectral analysis on OM mantra meditation: A pilot study. Applied Psychophysiology and Biofeedback, 43(2), 123–129. https://doi.org/10.1007/s10484-018-9391-7
Hoffman, J. W., Benson, H., Arns, P. A., Stainbrook, G. L., Landsberg, G. L., Young, J. B., & Gill, A. (1982). Reduced sympathetic nervous system responsivity associated with the relaxation response. Science, 215(4529), 190–192. https://doi.org/10.1126/science.7031901
Kirmizi-Alsan, E., Bayraktaroglu, Z., Gurvit, H., Keskin, Y. H., Emre, M., & Demiralp, T. (2006). Comparative analysis of event-related potentials during Go/NoGo and CPT: Decomposition of electrophysiological markers of response inhibition and sustained attention. Brain Research, 1104(1), 114–128. https://doi.org/10.1016/j.brainres.2006.03.010
Klem, G. H., Lüders, H. O., Jasper, H. H., & Elger, C. (1999). The ten-twenty electrode system of the International Federation. The International Federation of Clinical Neurophysiology. Electroencephalography and Clinical Neurophysiology. Supplement, 52, 3–6.
Kumar, S., Nagendra, H. R., Manjunath, N. K., Naveen, K. V., & Telles, S. (2010). Meditation on OM: Relevance from ancient texts and contemporary science. International Journal of Yoga, 3(1), 2–5. https://doi.org/10.4103/0973-6131.66771
Lazar, S. W., Bush, G., Gollub, R. L., Fricchione, G. L., Khalsa, G., & Benson, H. (2000). Functional brain mapping of the relaxation response and meditation. NeuroReport, 11(7), 1581–1585.
Leary, S., Weingart, K., Topp, R., & Bormann, J. (2018). The effect of mantram repetition on burnout and stress among VA staff. Workplace Health & Safety, 66(3), 120–128. https://doi.org/10.1177/2165079917697215
Lolla, A. (2018). Mantras help the general psychological well-being of college students: A pilot study. Journal of Religion and Health, 57(1), 110–119. https://doi.org/10.1007/s10943-017-0371-7
Lutz, A., Slagter, H. A., Rawlings, N. B., Francis, A. D., Greischar, L. L., & Davidson, R. J. (2009). Mental training enhances attentional stability: Neural and behavioral evidence. Journal of Neuroscience, 29(42), 13418–13427. https://doi.org/10.1523/JNEUROSCI.1614-09.2009
Oman, D., & Driskell, J. D. (2003). Holy name repetition as a spiritual exercise and therapeutic technique. Journal of Psychology & Christianity, 22(1), 5–19.
Posada-Quintero, H. F., Reljin, N., Bolkhovsky, J. B., Orjuela-Cañón, A. D., & Chon, K. H. (2019). Brain activity correlates with cognitive performance deterioration during sleep deprivation. Frontiers in Neuroscience, 13, 1001. https://doi.org/10.3389/fnins.2019.01001
Prinsloo, G. E., Derman, W. E., Lambert, M. I., & Rauch, H. G. (2013). The effect of a single episode of short duration heart rate variability biofeedback on measures of anxiety and relaxation states. International Journal of Stress Management, 20(4), 391–411. https://doi.org/10.1007/s10484-012-9207-0
Sachdev, S., & Sittiprapaporn, P. (2020). Electroencephalographic study of auditory system while listening to Ohm chanting. Asian Journal of Medical Sciences, 11(1), 75–79.
Saoji, A., Mohanty, S., & Vinchurkar, S. A. (2017). Effect of a single session of a yogic meditation technique on cognitive performance in medical students: A randomized crossover trial. Journal of Religion and Health, 56(1), 141–148. https://doi.org/10.1007/s10943-016-0195-x
Solis-Ortiz, S., Ramos, J., Arce, C., Guevara, M. A., & Corsi-Cabrera, M. (1994). EEG oscillations during menstrual cycle. International Journal of Neuroscience, 76(3–4), 279–292. https://doi.org/10.3109/00207459408986010
Srinivasan, T. M. (2013). From meditation to dhyana. International Journal of Yoga, 6(1), 1–3. https://doi.org/10.4103/0973-6131.105934
Stöckigt, B., Jeserich, F., Walach, H., Elies, M., Brinkhaus, B., & Teut, M. (2021). Experiences and perceived effects of rosary praying: A qualitative study. Journal of Religion and Health. https://doi.org/10.1007/s10943-021-01299-2
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), 199–207. https://doi.org/10.1016/j.ijpsycho.2004.07.004
Telles, S., Raghavendra, B. R., Naveen, K. V., Manjunath, N. K., Kumar, S., & Subramanya, P. (2013). Changes in autonomic variables following two meditative states described in yoga texts. Journal of Alternative and Complementary Medicine, 19(1), 35–42. https://doi.org/10.1089/acm.2011.0282
Zhe, J. (2008). Expectation, affection and responsibility: The charismatic journey of a new Buddhist group in Taiwan. Nova Religio, 12(2), 48–68. https://doi.org/10.1525/nr.2008.12.2.48
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Conceptualization: ST. Methodology: ST. Validation: ST. Formal analysis: SP. Investigation: SP. Resources: ST. Data Curation: SP. Writing—original draft: ST, SP. Writing—review and editing: ST, SP. Visualization: ST, AB. Supervision: ST. Project administration: ST, AB. Funding acquisition: AB.
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Pal, S., Telles, S. & Balkrishna, A. Changes in Brain Waves During Silent Repetition of OM: A Crossover Study from India. J Relig Health (2022). https://doi.org/10.1007/s10943-022-01687-2
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DOI: https://doi.org/10.1007/s10943-022-01687-2