Cognitive Processing
February 1, 2015
Pascal L Faber, Dietrich Lehmann, Lorena R R Gianotti et al.
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...
arXiv Preprint Archive
November 7, 2014
Roberto D Pascual-Marqui, Dietrich Lehmann, Pascal L Faber et al.
preprint
A brain microstate is characterized by a unique, fixed spatial distribution of electrically active neurons with time varying amplitude. It is hypothesized that a microstate implements a functional/physiological state of the brain during which specific neural computations are performed. Based on this hypothesis, brain electrical activity is modeled as a time sequence of non-overlapping...
Frontiers in Human Neuroscience
December 27, 2013
Patricia Milz, Pascal L Faber, D. Lehmann et al.
We investigated brain functional connectivity comparing no-task resting to breath counting (a meditation exercise but given as task without referring to meditation). Functional connectivity computed as EEG coherence between head-surface data suffers from localization ambiguity, reference dependence, and overestimation due to volume conduction. Lagged coherence between intracortical model...
Cognitive Processing
August 2012
Pascal L Faber, Dietrich Lehmann, Shisei Tei et al.
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...
European Psychiatry
March 1, 2011
Pascal L Faber, D. Lehmann, Patricia Milz et al.
IntroductionThe measure of complex dimensionality assesses the number of independent processes that generate an observed time series.ObjectivesTo investigate whether meditation exercises are associated with fewer or more independently active brain processes, and whether different meditation traditions show different results.AimsDoes brain electric complex dimensionality differ between the state...
European Psychiatry
March 1, 2011
Patricia Milz, A. Theodoropoulou, Shisei Tei et al.
IntroductionDifferent meditation practices reportedly affect brain electric activity.ObjectivesTo assess common characteristics in brain electric activity during the state of meditation across different meditation traditions.AimsDo meditation traditions share commonalities in EEG spectral power changes from task-free resting to meditation?MethodsData from 71 experienced meditators of five...
Brain Topography
November 1, 2009
Shisei Tei, Pascal L Faber, Dietrich Lehmann et al.
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...