EEG source imaging during two Qigong meditations

Pascal L. Faber, Dietrich Lehmann, Shisei Tei, Takuya Tsujiuchi, Hiroaki Kumano, Roberto D. Pascual-Marqui, Kieko Kochi

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    Abstract

    Experienced Qigong meditators who regularly perform the exercises "Thinking of Nothing" and "Qigong" were studied with multichannel EEG source imaging during their meditations. The intracerebral localization of brain electric activity during the two meditation conditions was compared using sLORETA functional EEG tomography. Differences between conditions were assessed using t statistics (corrected for multiple testing) on the normalized and log-transformed current density values of the sLORETA images. In the EEG alpha-2 frequency, 125 voxels differed significantly; all were more active during "Qigong" than "Thinking of Nothing," forming a single cluster in parietal Brodmann areas 5, 7, 31, and 40, all in the right hemisphere. In the EEG beta-1 frequency, 37 voxels differed significantly; all were more active during "Thinking of Nothing" than "Qigong," forming a single cluster in prefrontal Brodmann areas 6, 8, and 9, all in the left hemisphere. Compared to combined initial-final notask resting, "Qigong" showed activation in posterior areas whereas "Thinking of Nothing" showed activation in anterior areas. The stronger activity of posterior (right) parietal areas during "Qigong" and anterior (left) prefrontal areas during "Thinking of Nothing" may reflect a predominance of self-reference, attention and input-centered processing in the "Qigong" meditation, and of control- centered processing in the "Thinking of Nothing" meditation.

    Original languageEnglish
    Pages (from-to)255-265
    Number of pages11
    JournalCognitive Processing
    Volume13
    Issue number3
    DOIs
    Publication statusPublished - 2012 Aug

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    Keywords

    • EEG
    • LORETA
    • Meditation
    • Meditation exercise "Thinking of Nothing"
    • Qigong

    ASJC Scopus subject areas

    • Cognitive Neuroscience
    • Experimental and Cognitive Psychology
    • Artificial Intelligence

    Cite this

    Faber, P. L., Lehmann, D., Tei, S., Tsujiuchi, T., Kumano, H., Pascual-Marqui, R. D., & Kochi, K. (2012). EEG source imaging during two Qigong meditations. Cognitive Processing, 13(3), 255-265. https://doi.org/10.1007/s10339-012-0441-4