Abstract
Mantra meditation is easy to practice. “OM” Mantra is the highest sacred symbol in Hinduism. The present study investigated the temporal dynamics of oscillatory changes after OM mantra meditation. Twenty-three naive meditators were asked to perform loud OM chanting for 30 min and the EEG were subsequently recorded with closed eyes before and after it. To obtain new insights into the nature of the EEG after OM chanting, EEG signals were analyzed using spectral domain analysis. Statistical analysis was performed using repeated measures of analysis of variance. It did not reveal any specific band involvement into OM mantra meditation. But significantly increase in theta power was found after meditation when averaged across all brain regions. This is the main effect of OM mantra meditation. However, the theta power showed higher theta amplitude after condition at all regions in comparison to the before condition of meditation. Finding was similar to other studies documenting reduction in cortical arousal during a state of relaxation. The study argues for the potential role of loud ‘OM’ chanting in offering relaxation. It provides a new perspective of meditation to the naive meditators. This information may help to demystify meditation and encourage those considering this as beneficial practice.
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References
Aftanas, L. I., & Golocheikine, S. A. (2001). Human anterior and frontal midline theta and lower alpha reflect emotionally positive state and internalized attention: High-resolution EEG investigation of meditation. Neuroscience Letter, 310, 57–60.
Amodio, P., Orsato, R., Marchetti, P., Schiff, S., Poci, C., Angeli, P., et al. (2009). Electroencephalographic analysis for the assessment of hepatic encephalopathy: Comparison of non-parametric and parametric spectral estimation techniques. Clinical Neurophysiology, 36, 107–115.
Baijal, S., & Srinivasan, N. (2010). Theta activity and meditative states: Spectral changes during concentrative meditation. Cognitive Processing, 11, 31–38.
Burke, A. (2012). Comparing individual preferences for four meditation techniques: Zen, Vipassana (Mindfulness), Qigong, and Mantra. Explore (NY), 8(4), 237–242.
Cahn, B. R., Delorme, A., & Polich, J. (2010). Occipital gamma activation during Vipassana meditation. Cognitive Processing, 11, 39–56.
Cahn, B. R., & Polich, J. (2006). Meditation states and traits: EEG, ERP, and neuroimaging studies. Psychological Bulletin, 132, 180–211.
Canteros, J. L., Atienza, M., Stickgold, R., & Hobson, J. A. (2002). Nightcap: A reliable system for determining sleep-onset latency. Sleep, 25, 238–245.
Chan, A. S., Han, Y. M., & Cheung, M. C. (2008). Electroencephalographic (EEG) measurements of mindfulness-based triarchic body-pathway relaxation technique: A pilot study. Applied Psychophysiology and Biofeedback, 33, 39–47.
Das, I., & Anand, H. (2012). Effect of prayer and OM meditation in enhancing galvanic skin response. Psychological Thought, 5, 141–149.
Dean, C., & Cosic, I. (2011). States of consciousness: Experimental insights into meditation, waking, sleep and dreams. New York: Springer.
Deepeshwar, S., Vinchurkar, S. A., Visweswaraiah, N. K., & Nagendra, H. R. (2014). Hemodynamic responses on prefrontal cortex related to meditation and attentional task. Frontiers in Systems Neuroscience, 8, 117–132.
Gasser, T., & Molinari, L. (1996). The analysis of the EEG. Statistical Methods in Medical Research, 5, 67.
Gurjar, A. A., & Ladhake, S. A. (2008). Time-frequency analysis of chanting Sanskrit divine sound “OM” mantra. International Journal of Computer Science and Network Security, 8(8), 170–175.
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, 585–592.
Huang, H. Y., & Lo, P. C. (2009). EEG dynamics of experienced Zen meditation practitioners probed by complexity index and spectral measure. Journal of Medical Engineering & Technology, 33, 314–321.
Jacobs, G. D., & Friedman, R. (2004). EEG spectral analysis of relaxation techniques. Applied Psychophysiology Biofeedback, 29(4), 245–254.
Jacobs, G. D., & Lubar, J. F. (1989). Spectral analysis of the central nervous system effects of the relaxation response elicited by autogenic training. Behavioral Medicine, 15, 125–132.
Kalyani, B. G., Venkatasubramanian, G., Arasappa, R., Rao, N. P., Kalmady, S. V., Behere, R. V., & Gangadhar, B. N. (2011). Neurohemodynamic correlates of ‘OM’ chanting: A pilot functional magnetic resonance imaging study. International Journal of Yoga, 4, 3–6.
Kasamatsu, A., & Hirai, T. (1966). An electroencephalographic study on the Zen meditation (Zazen). Folia Psychiatrica et Neurologica Japonica, 20, 315–336.
Kumar, S., Nagendra, H., Manjunath, N., Naveen, K., & Telles, S. (2010). Meditation on ‘OM’: Relevance from ancient texts and contemporary science. International Journal of Yoga, 3, 2–5.
Kumar, U., Guleria, A., & Khetrapal, C. L. (2015). Neuro-cognitive aspects of “OM” sound/syllable perception: A functional neuroimaging study. Cognition and Emotion, 29, 432–441.
Lagopoulos, J., Xu, J., Rasmussen, I., Vik, A., Malhi, G. S., Eliassen, C. F., et al. (2009). Increased theta and alpha EEG activity during nondirective meditation. The Journal of Alternative and Complementary Medicine, 15, 1187–1192.
Madanmohan. (2008). Introducing yoga to medical students-the JIPMER experience: Advanced centre for yoga therapy. In Education and research. Puducherry: JIP-MER.
Nuwer, M., Comi, G., Emerson, R., Fuglsang-Frederiksen, A., Guerit, J., Hinrichs, H., et al. (1999). IFCN standards for digital recording of clinical EEG. Recommendations for the Practice of Clinical Neurophysiology: Guidelines of the International Federation of Clinical Neurophysiology, 52, 11–14.
Schmidt, S., & Walach, H. (2013). Meditation: Neuroscientific approaches and philosophical implications. New York: Springer.
Telles, S., Nagarathna, R., & Nagendra, H. R. (1995). Autonomic changes during ‘OM’ meditation. Indian Journal of Physiol Pharmacology, 39, 418–420.
Telles, S., Nagarathna, R., & Nagendra, H. R. (1998). Autonomic changes while mentally repeating two syllables-one meaningful and the other neutral. Indian Journal of Physiol Pharmacol, 42, 57–63.
Telles, S., Nagarathna, R., Nagendra, H. R., & Desiraju, T. (1994). Alterations in auditory middle latency evoked potentials during meditation on a meaningful symbol- “OM”. International Journal of Neuroscience, 74, 87–94.
West, M. A. (1980). Meditation and the EEG. Psychological Medicine, 10, 369–375.
Acknowledgements
We thankful to Dr. Saurabh Bilala (M. D. Neurosurgeon) from Akola, Maharashtra for providing his medical Lab for EEG analysis and experimental recording, also to Principal Shri Gajanan Maharaj College of Engineering, Shegaon, Maharashtra for providing me R & D labs for carrying out my research work.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or Indian Council for Medical Research or comparable ethical standards.
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Harne, B.P., Hiwale, A.S. EEG Spectral Analysis on OM Mantra Meditation: A Pilot Study. Appl Psychophysiol Biofeedback 43, 123–129 (2018). https://doi.org/10.1007/s10484-018-9391-7
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DOI: https://doi.org/10.1007/s10484-018-9391-7