Meditators and Non-Meditators: EEG Source Imaging During Resting |
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Authors: | Shisei Tei Pascal L Faber Dietrich Lehmann Takuya Tsujiuchi Hiroaki Kumano Roberto D Pascual-Marqui Lorena R R Gianotti Kieko Kochi |
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Institution: | (1) Department of Stress Science and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan;(2) The KEY Institute for Brain-Mind Research, University Hospital of Psychiatry, Lenggstr. 31, Zurich, CH-8032, Switzerland;(3) Department of Health Science and Social Welfare, Faculty of Human Sciences, Waseda University, Tokorozawa-City Saitama, 359-1192, Japan; |
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Abstract: | Many meditation exercises aim at increased awareness of ongoing experiences through sustained attention and at detachment,
i.e., non-engaging observation of these ongoing experiences by the intent not to analyze, judge or expect anything. Long-term
meditation practice is believed to generalize the ability of increased awareness and greater detachment into everyday life.
We hypothesized that neuroplasticity effects of meditation (correlates of increased awareness and detachment) would be detectable
in a no-task resting state. EEG recorded during resting was compared between Qigong meditators and controls. Using LORETA
(low resolution electromagnetic tomography) to compute the intracerebral source locations, differences in brain activations
between groups were found in the inhibitory delta EEG frequency band. In the meditators, appraisal systems were inhibited,
while brain areas involved in the detection and integration of internal and external sensory information showed increased
activation. This suggests that neuroplasticity effects of long-term meditation practice, subjectively described as increased
awareness and greater detachment, are carried over into non-meditating states. |
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