Abstract
Meditation is a self-induced and willfully initiated practice that alters the state of consciousness. The meditation practice of Zazen, like many other meditation practices, aims at disregarding intrusive thoughts while controlling body posture. It is an open monitoring meditation characterized by detached moment-to-moment awareness and reduced conceptual thinking and self-reference. Which brain areas differ in electric activity during Zazen compared to task-free resting? Since scalp electroencephalography (EEG) waveforms are reference-dependent, conclusions about the localization of active brain areas are ambiguous. Computing intracerebral source models from the scalp EEG data solves this problem. In the present study, we applied source modeling using low resolution brain electromagnetic tomography (LORETA) to 58-channel scalp EEG data recorded from 15 experienced Zen meditators during Zazen and no-task resting. Zazen compared to no-task resting showed increased alpha-1 and alpha-2 frequency activity in an exclusively right-lateralized cluster extending from prefrontal areas including the insula to parts of the somatosensory and motor cortices and temporal areas. Zazen also showed decreased alpha and beta-2 activity in the left angular gyrus and decreased beta-1 and beta-2 activity in a large bilateral posterior cluster comprising the visual cortex, the posterior cingulate cortex and the parietal cortex. The results include parts of the default mode network and suggest enhanced automatic memory and emotion processing, reduced conceptual thinking and self-reference on a less judgmental, i.e., more detached moment-to-moment basis during Zazen compared to no-task resting.
References
Aftanas L, Golosheykin S (2005) Impact of regular meditation practice on EEG activity at rest and during evoked negative emotions. Int J Neurosci 115(6):893–909
Austin JH (2011) Meditating selflessly: practical neural zen. MIT Press, Cambridge
Austin JH (2013) Zen and the brain: mutually illuminating topics. Front Psychol 4:784. doi:10.3389/fpsyg.2013.00784
Bazanova OM, Vernon D (2013) Interpreting EEG alpha activity. Neurosci Biobehav Rev. doi:10.1016/j.neubiorev.2013.05.007
Becker DE, Shapiro D (1981) Physiological responses to clicks during Zen, Yoga, and TM meditation. Psychophysiology 18(6):694–699
Berkovich-Ohana A, Glicksohn J, Goldstein A (2012) Mindfulness-induced changes in gamma band activity—implications for the default mode network, self-reference and attention. Clin Neurophysiol 123(4):700–710. doi:10.1016/j.clinph.2011.07.048
Binder JR, Frost JA, Hammeke TA, Bellgowan PS, Rao SM, Cox RW (1999) Conceptual processing during the conscious resting state. A functional MRI study. J Cogn Neurosci 11(1):80–95
Brefczynski-Lewis JA, Lutz A, Schaefer HS, Levinson DB, Davidson RJ (2007) Neural correlates of attentional expertise in long-term meditation practitioners. Proc Natl Acad Sci USA 104(27):11483–11488
Brett M, Johnsrude IS, Owen AM (2002) The problem of functional localization in the human brain. Nat Rev Neurosci 3(3):243–249
Brewer JA, Worhunsky PD, Gray JR, Tang YY, Weber J, Kober H (2011) Meditation experience is associated with differences in default mode network activity and connectivity. Proc Natl Acad Sci USA 108(50):20254–20259. doi:10.1073/pnas.1112029108
Brewer JA, Garrison KA, Whitfield-Gabrieli S (2013) What about the “self” is processed in the posterior cingulate cortex? Front Hum Neurosci 7:647
Britz J, Van De Ville D, Michel CM (2010) BOLD correlates of EEG topography reveal rapid resting-state network dynamics. Neuroimage 52(4):1162–1170. doi:10.1016/j.neuroimage.2010.02.052
Buckner RL, Andrews-Hanna JR, Schacter DL (2008) The brain’s default network: anatomy, function, and relevance to disease. Ann N Y Acad Sci 1124:1–38. doi:10.1196/annals.1440.011
Cahn BR, Polich J (2006) Meditation states and traits: EEG, ERP, and neuroimaging studies. Psychol Bull 132(2):180–211
Cahn BR, Delorme A, Polich J (2010) Occipital gamma activation during Vipassana meditation. Cogn Process 11(1):39–56. doi:10.1007/s10339-009-0352-1
Cavanna A, Trimble M (2006) The precuneus: a review of its functional anatomy and behavioural correlates. Brain 129(Pt 3):564–583. doi:10.1093/brain/awl004
Chapman LJ, Chapman JP (1987) The measurement of handedness. Brain Cogn 6(2):175–183
Cooper NR, Croft RJ, Dominey SJ, Burgess AP, Gruzelier JH (2003) Paradox lost? Exploring the role of alpha oscillations during externally vs. internally directed attention and the implications for idling and inhibition hypotheses. Int J Psychophysiol 47(1):65–74
Dambacher F, Sack AT, Lobbestael J, Arntz A, Brugmann S, Schuhmann T (2014) The role of right prefrontal and medial cortex in response inhibition: interfering with action restraint and action cancellation using transcranial magnetic brain stimulation. J Cogn Neurosci 26(8):1775–1784. doi:10.1162/jocn_a_00595
Dogen (1243/2001) Treasury of the eye of the true dharma, Book 11. Principles of Zazen (Zazen gi). http://scbs.stanford.edu/sztp3/translations/shobogenzo/translations/zazengi/zazengi.translation.html. Accessed 31 March 2014
Dunn BR, Hartigan JA, Mikulas WL (1999) Concentration and mindfulness meditations: unique forms of consciousness? Appl Psychophysiol Biofeedback 24(3):147–165
Eckert MA, Menon V, Walczak A, Ahlstrom J, Denslow S, Horwitz A, Dubno JR (2009) At the heart of the ventral attention system: the right anterior insula. Hum Brain Mapp 30(8):2530–2541. doi:10.1002/hbm.20688
Evans AC, Collins DL (1993) A 305-member MRI-based stereotactic atlas for CBF activation studies. Proceedings of the 40th Annual Meeting of the Society for Nuclear Medicine
Farb NA, Segal ZV, Mayberg H, Bean J, McKeon D, Fatima Z, Anderson AK (2007) Attending to the present: mindfulness meditation reveals distinct neural modes of self-reference. Soc Cogn Affect Neurosci 2(4):313–322. doi:10.1093/scan/nsm030
Garrison KA, Santoyo JF, Davis JH, Thornhill TA 4th, Kerr CE, Brewer JA (2013a) Effortless awareness: using real time neurofeedback to investigate correlates of posterior cingulate cortex activity in meditators’ self-report. Front Hum Neurosci 7:440. doi:10.3389/fnhum.2013.00440
Garrison KA, Scheinost D, Worhunsky PD, Elwafi HM, Thornhill TA 4th, Thompson E, Saron C, Desbordes G, Kober H, Hampson M, Gray JR, Constable RT, Papademetris X, Brewer JA (2013b) Real-time fMRI links subjective experience with brain activity during focused attention. Neuroimage 81:110–118
Geselowitz DB (1998) The zero of potential. IEEE Eng Med Biol Mag 17(1):128–132
Goodale MA (2011) Transforming vision into action. Vision Res 51(14):1567–1587. doi:10.1016/j.visres.2010.07.027
Goodale MA, Milner AD (1992) Separate pathways for perception and action. Trends Neurosci 15(1):20–25. doi:10.1016/0166-2236(92)90344-8
Gray JR, Braver TS, Raichle ME (2002) Integration of emotion and cognition in the lateral prefrontal cortex. Proc Natl Acad Sci USA 99:4115–4120
Greicius MD, Srivastava G, Reiss AL, Menon V (2004) Default-mode network activity distinguishes Alzheimer’s disease from healthy aging: evidence from functional MRI. Proc Natl Acad Sci USA 101(13):4637–4642
Gusnard DA, Akbudak E, Shulman GL, Raichle ME (2001) Medial prefrontal cortex and self-referential mental activity: relation to a default mode of brain function. Proc Natl Acad Sci USA 98(7):4259–4264
Huang HY, Lo PC (2009) EEG dynamics of experienced Zen meditation practitioners probed by complexity index and spectral measure. J Med Eng Technol 33(4):314–321. doi:10.1080/03091900802602677
Işoğlu-Alkaç U, Strüber D (2006) Necker cube reversals during long-term EEG recordings: sub-bands of alpha activity. Int J Psychophysiol 59(2):179–189
Josipovic Z (2010) Duality and nonduality in meditation research. Conscious Cogn 19(4):1119–1121. doi:10.1016/j.concog.2010.03.016
Karakas S (1997) A descriptive framework for information processing: an integrative approach. Int J Psychophysiol 26(1–3):353–368
Kasamatsu A, Hirai T (1966) An electroencephalographic study on the zen meditation (Zazen). Folia Psychiatr Neurol Jpn 20(4):315–336
Keil A, Müller MM, Gruber T, Wienbruch C, Stolarova M, Elbert T (2001) Effects of emotional arousal in the cerebral hemispheres: a study of oscillatory brain activity and event-related potentials. Clin Neurophysiol 112:2057–2068
Klimesch W (1999) EEG alpha and theta oscillations reflect cognitive and memory performance: a review and analysis. Brain Res Brain Res Rev 29(2–3):169–195
Klimesch W, Sauseng P, Hanslmayr S (2007) EEG alpha oscillations: the inhibition–timing hypothesis. Brain Res Rev 53:63–88
Kosslyn SM, Alpert NM, Thompson WL, Maljkovic V, Weise SB, Chabris CF, Hamilton SE, Rauch SL, Buonanno FS (1993) Visual mental imagery activates topographically organized visual cortex: PET investigations. J Cogn Neurosci 5(3):263–287. doi:10.1162/jocn.1993.5.3.263
Kosslyn SM, Pascual-Leone A, Felician O, Camposano S, Keenan JP, Thompson WL, Ganis G, Sukel KE, Alpert NM (1999) The role of area 17 in visual imagery: convergent evidence from PET and rTMS. Science 284(5411):167–170
Kubicki S, Herrmann WM, Fichte K, Freund G (1979) Reflections on the topics: EEG frequency bands and regulation of vigilance. Pharmakopsychiatr Neuropsychopharmakol 12:237–245
Kubota Y, Sato W, Toichi M, Murai T, Okada T, Hayashi A, Sengoku A (2001) Frontal midline theta rhythm is correlated with cardiac autonomic activities during the performance of an attention demanding meditation procedure. Brain Res Cogn Brain Res 11(2):281–287
Laufs H, Krakow K, Sterzer P, Eger E, Beyerle A, Salek-Haddadi A, Kleinschmidt A (2003) Electroencephalographic signatures of attentional and cognitive default modes in spontaneous brain activity fluctuations at rest. Proc Natl Acad Sci USA 100:11053–11058
Laurian S, Bader M, Lanares J, Oros L (1991) Topography of event-related potentials elicited by visual emotional stimuli. Int J Psychophysiol 10(3):231–238
Lavallee CF, Hunter MD, Persinger MA (2011) Intracerebral source generators characterizing concentrative meditation. Cogn Process 12(2):141–150. doi:10.1007/s10339-011-0394-z
Lazar SW, Kerr CE, Wasserman RH, Gray JR, Greve DN, Treadway MT, McGarvey M, Quinn BT, Dusek JA, Benson H, Rauch SL, Moore CI, Fischl B (2005) Meditation experience is associated with increased cortical thickness. NeuroReport 16(17):1893–1897
Legrand D, Ruby P (2009) What is self-specific? Theoretical investigation and critical review of neuroimaging results. Psychol Rev 116(1):252–282. doi:10.1037/a0014172
Lehmann D, Faber PL, Achermann P, Jeanmonod D, Gianotti LR, Pizzagalli D (2001) Brain sources of EEG gamma frequency during volitionally meditation-induced, altered states of consciousness, and experience of the self. Psychiatry Res 108(2):111–121
Lehmann D, Faber PL, Tei S, Pascual-Marqui RD, Milz P, Kochi K (2012) Reduced functional connectivity between cortical sources in five meditation traditions detected with lagged coherence using EEG tomography. Neuroimage 60(2):1574–1586. doi:10.1016/j.neuroimage.2012.01.042
Lou HC, Luber B, Crupain M, Keenan JP, Nowak M, Kjaer TW, Sackeim HA, Lisanby SH (2004) Parietal cortex and representation of the mental Self. Proc Natl Acad Sci USA 101(17):6827–6832
Lutz A, Greischar LL, Rawlings NB, Ricard M, Davidson RJ (2004) Long-term meditators self-induce high-amplitude gamma synchrony during mental practice. Proc Natl Acad Sci USA 101(46):16369–16373
Lutz A, Brefczynski-Lewis J, Johnstone T, Davidson RJ (2008) Regulation of the neural circuitry of emotion by compassion meditation: effects of meditative expertise. PLoS One 3(3):e1897. doi:10.1371/journal.pone.0001897
Makeig S, Jung TP (1995) Changes in alertness are a principal component of variance in the EEG spectrum. NeuroReport 7(1):213–216
Mason MF, Norton MI, Van Horn JD, Wegner DM, Grafton ST, Macrae CN (2007) Wandering minds: the default network and stimulus-independent thought. Science 315(5810):393–395
Mesulam MM (1990) Large-scale neurocognitive networks and distributed processing for attention, language, and memory. Ann Neurol 28:597–613
Müller TJ, Federspiel A, Fallgatter AJ, Strik WK (1999) EEG signs of vigilance fluctuations preceding perceptual flips in multistable illusionary motion. NeuroReport 10(16):3423–3427
Murata T, Koshino Y, Omori M, Murata I, Nishio M, Sakamoto K, Horie T, Isaki K (1994) Quantitative EEG study on zen meditation (Zazen). Jpn J Psychiatr Neurol 48(4):881–890
Nichols TE, Holmes AP (2002) Nonparametric permutation tests for functional neuroimaging: a primer with examples. Hum Brain Mapp 15:1–25
Niedermeyer E, Lopes da Silva F (2005) Electroencephalography: basic principles, clinical applications, and related fields, 5th edn. Lippincott Williams Wilkins, Philadelphia
Nuwer MR, Comi G, Emerson R, Fuglsang-Frederiksen A, Guérit JM, Hinrichs H, Ikeda A, Luccas FJ, Rappelsburger P (1998) IFCN standards for digital recording of clinical EEG. International Federation of Clinical Neurophysiology. Electroencephalogr Clin Neurophysiol 106:259–261
O’Gorman RL, Poil SS, Brandeis D, Klaver P, Bollmann S, Ghisleni C, Luchinger R, Martin E, Shankaranarayanan A, Alsop DC, Michels L (2013) Coupling between resting cerebral perfusion and EEG. Brain Topogr 26(3):442–457
Pagnoni G, Cekic M, Guo Y (2008) “Thinking about not-thinking”: neural correlates of conceptual processing during Zen meditation. PLoS One 3(9):e3083. doi:10.1371/journal.pone.0003083
Palva S, Palva JM (2007) New vistas for alpha-frequency band oscillations. Trends Neurosci 30(4):150–158
Pascual-Marqui RD (2002) Standardized low resolution brain electromagnetic tomography (sLORETA): technical details. Methods Find Exp Clin Pharmacol 24(Suppl D):5–12
Pascual-Marqui RD (2009) Theory of the EEG inverse problem. In: Tong S, Thakor NV (eds) Quantitative EEG analysis: methods and clinical applications. Artech House, Boston, pp 121–140
Pascual-Marqui RD, Michel CM, Lehmann D (1994) Low resolution electromagnetic tomography: a new method for localizing electrical activity in the brain. Int J Psychophysiol 18(1):49–65
Pascual-Marqui RD, Lehmann D, Koenig T, Kochi K, Merlo MC, Hell D, Koukkou M (1999) Low resolution brain electromagnetic tomography (LORETA) functional imaging in acute, neuroleptic-naive, first-episode, productive schizophrenia. Psychiatry Res 90(3):169–179
Qin P, Northoff G (2011) How is our self related to midline regions and the default-mode network? Neuroimage 57(3):1221–1233. doi:10.1016/j.neuroimage.2011.05.028
Raffone A, Srinivasan N (2010) The exploration of meditation in the neuroscience of attention and consciousness. Cogn Process 11(1):1–7. doi:10.1007/s10339-009-0354-z
Raichle ME, MacLeod AM, Snyder AZ, Powers WJ, Gusnard DA, Shulman GL (2001) A default mode of brain function. Proc Natl Acad Sci USA 98(2):676–682
Ruchkin D (2005) EEG coherence. Int J Psychophysiol 57(2):83–85
Schürmann M, Başar-Eroglu C, Başar E (1997) A possible role of evoked alpha in primary sensory processing: common properties of cat intracranial recordings and human EEG and MEG. Int J Psychophysiol 26(1–3):149–170
Seghier ML, Fagan E, Price CJ (2010) Functional subdivisions in the left angular gyrus where the semantic system meets and diverges from the default network. J Neurosci 30(50):16809–16817. doi:10.1523/JNEUROSCI.3377-10.2010
Sestieri C, Corbetta M, Romani GL, Shulman GL (2011) Episodic memory retrieval, parietal cortex, and the default mode network: functional and topographic analyses. J Neurosci 31(12):4407–4420. doi:10.1523/JNEUROSCI.3335-10.2011
Shapiro SL, Walsh R (2003) An analysis of recent meditation research and suggestions for future directions. Humanistic Psychologist 31(2–3):86–114. doi:10.1080/08873267.2003.9986927
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. Int J Psychophysiol 55(2):199–207
Tebēcis AK (1975) A controlled study of the EEG during transcendental meditation: comparison with hypnosis. Folia Psychiatr Neurol Jpn 29(4):305–313
Tei S, Faber PL, Lehmann D, Tsujiuchi T, Kumano H, Pascual-Marqui RD, Gianotti LRR, Kochi K (2009) Meditators and non-meditators: EEG source imaging during resting. Brain Topogr 22:158–165. doi:10.1007/s10548-009-0107-4
Travis F, Arenander A (2006) Cross-sectional and longitudinal study of effects of transcendental meditation practice on interhemispheric frontal asymmetry and frontal coherence. Int J Neurosci 116(12):1519–1538
Travis F, Shear J (2010a) Focused attention, open monitoring and automatic self-transcending: Categories to organize meditations from Vedic, Buddhist and Chinese traditions. Conscious Cogn 19(4):1110–1118. doi:10.1016/j.concog.2010.01.007
Travis F, Shear J (2010b) Reply to Josipovic: duality and non-duality in meditation research. Conscious Cogn 19(4):1122–1123. doi:10.1016/j.concog.2010.04.003
Travis F, Haaga DA, Hagelin J, Tanner M, Arenander A, Nidich S, Gaylord-King C, Grosswald S, Rainforth M, Schneider RH (2010) A self-referential default brain state: patterns of coherence, power, and eLORETA sources during eyes-closed rest and Transcendental Meditation practice. Cogn Process 11(1):21–30. doi:10.1007/s10339-009-0343-2
Ungerleider LG, Mishkin M (1982) Two cortical visual systems. In: Ingle DJ, Goodale MA, Mansfield RJW (eds) Analysis of visual behavior. MIT Press, Boston, pp 549–586
Yamamoto S, Kitamura Y, Yamada N, Nakashima Y, Kuroda S (2006) Medial profrontal cortex and anterior cingulate cortex in the generation of alpha activity induced by transcendental meditation: a magnetoencephalographic study. Acta Med Okayama 60(1):51–58
Yu X, Fumoto M, Nakatani Y, Sekiyama T, Kikuchi H, Seki Y, Sato-Suzuki I, Arita H (2011) Activation of the anterior prefrontal cortex and serotonergic system is associated with improvements in mood and EEG changes induced by Zen meditation practice in novices. Int J Psychophysiol 80(2):103–111. doi:10.1016/j.ijpsycho.2011.02.004
Zhang J, Zhou R (2014) Individual differences in automatic emotion regulation affect the asymmetry of the LPP component. PLoS One 9(2):e88261. doi:10.1371/journal.pone.0088261
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Supported in part by Grant Nr. 44/06 from the Bial Foundation, S. Mamede do Coronado, Portugal.
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Dietrich Lehmann: Deceased.
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Faber, P.L., Lehmann, D., Gianotti, L.R.R. et al. Zazen meditation and no-task resting EEG compared with LORETA intracortical source localization. Cogn Process 16, 87–96 (2015). https://doi.org/10.1007/s10339-014-0637-x
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DOI: https://doi.org/10.1007/s10339-014-0637-x