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01-08-2012 | Research Report

EEG source imaging during two Qigong meditations

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

Published in: Cognitive Processing | Issue 3/2012

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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 no-task 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.

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Title: EEG source imaging during two Qigong meditations
Authors: Pascal L. Faber
Dietrich Lehmann
Shisei Tei
Takuya Tsujiuchi
Hiroaki Kumano
Roberto D. Pascual-Marqui
Kieko Kochi
Publication date: 01-08-2012
Publisher: Springer-Verlag
Published in: Cognitive Processing / Issue 3/2012
Print ISSN: 1612-4782
Electronic ISSN: 1612-4790
DOI: https://doi.org/10.1007/s10339-012-0441-4

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