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Reduced functional connectivity between cortical sources in five meditation traditions detected with lagged coherence using EEG tomography

Dietrich Lehmann, Pascal L. Faber, Shisei Tei, Roberto D. Pascual-Marqui, Patricia Milz, Kieko Kochi
2012 NeuroImage  
All 171 functional connectivities between regions were computed as 'lagged coherence' for the eight EEG frequency bands (delta through gamma).  ...  All significant differences (corrected for multiple testing) between meditation compared to no-task rest before and after meditation showed lower coherence during meditation, in all five traditions and  ...  Steiner, M.A. for work in data collection. Supported in part by Grant Nr. 44/06 from the Bial Foundation, S. Mamede do Coronado, Portugal.  ... 
doi:10.1016/j.neuroimage.2012.01.042 pmid:22266174 fatcat:l7dr5ahtwvgcnjh6sxxz4uorp4

Reduced functional connectivity between cortical sources in five meditation traditions detected with lagged coherence using EEG tomography

Dietrich Lehmann, Pascal L Faber, Shisei Tei, Roberto D Pascual-Marqui, Patricia Milz, Kieko Kochi
2012
Reduced functional connectivity between cortical sources in five meditation traditions detected with lagged coherence using EEG tomography. NeuroImage, 60(2):1574-1586.  ...  All 171 functional connectivities between regions were computed as 'lagged coherence' for the eight EEG frequency bands (delta through gamma).  ...  Steiner, M.A. for work in data collection. Supported in part by Grant Nr. 44/06 from the Bial Foundation, S. Mamede do Coronado, Portugal.  ... 
doi:10.5167/uzh-61702 fatcat:nvpqoiqgnrfc7fas3vpqy7msee

A Critical Analysis on Characterizing the Meditation Experience Through the Electroencephalogram

Camila Sardeto Deolindo, Mauricio Watanabe Ribeiro, Maria Adelia Aratanha, Rui Ferreira Afonso, Mona Irrmischer, Elisa Harumi Kozasa
2020 Frontiers in Systems Neuroscience  
Therefore, in this article, we discuss the usage of the electroencephalogram (EEG) as a tool to study meditation experiences in healthy individuals.  ...  Meditation practices, originated from ancient traditions, have increasingly received attention due to their potential benefits to mental and physical health.  ...  For example, Lehmann et al. (2012) and Milz et al. (2014) applied lagged coherence to evaluate the functional connectivity between meditation and resting.  ... 
doi:10.3389/fnsys.2020.00053 pmid:32848645 pmcid:PMC7427581 fatcat:p3nagjs7bbhmvle6xqatapuqna

EEG source imaging during two Qigong meditations

Pascal L. Faber, Dietrich Lehmann, Shisei Tei, Takuya Tsujiuchi, Hiroaki Kumano, Roberto D. Pascual-Marqui, Kieko Kochi
2012 Cognitive Processing  
The intracerebral localization of brain electric activity during the two meditation conditions was compared using sLORETA functional EEG tomography.  ...  Experienced Qigong meditators who regularly perform the exercises "Thinking of Nothing" and "Qigong" were studied with multichannel EEG source imaging during their meditations.  ...  Acknowledgments This work was supported in part by grant Nr. 44/06 from the Bial Foundation, S. Mamede do Coronado, Portugal.  ... 
doi:10.1007/s10339-012-0441-4 pmid:22562287 fatcat:neacuoq7snc5rfqbhyzesnwkba

Content-Free Awareness: EEG-fcMRI Correlates of Consciousness as Such in an Expert Meditator

Ulf Winter, Pierre LeVan, Tilmann L. Borghardt, Burak Akin, Marc Wittmann, Yeshe Leyens, Stefan Schmidt
2020 Frontiers in Psychology  
The combination of high-resolution EEG and ultrafast fMRI enabled us to analyze the dynamic aspects of fMRI connectivity informed by EEG power analysis.  ...  The neural correlates of CFA were characterized by a sharp decrease in alpha power and an increase in theta power as well as increases in functional connectivity in the DAN and decreases in the posterior  ...  Reduced functional connectivity between cortical sources in five meditation traditions detected with lagged coherence using EEG tomography.  ... 
doi:10.3389/fpsyg.2019.03064 pmid:32132942 pmcid:PMC7040185 fatcat:h4faa3kfpfepvc33fc35qvwhym

19th biennial IPEG Meeting

Igor Timofeev, Leon Kenemans, P. F. Fabene, A. Ahnaou, Sebastian Olbrich, Robert Oostenveld, Martijn Arns, Nash Boutros, Fernando Lopes da Silva, Igor Timofeev, Ole Jensen, Sandra K. Loo (+404 others)
2016 Neuropsychiatric Electrophysiology  
It also showed an accuracy of 72 % using the most 4 discriminative rsEEG markers of source lagged linear connectivity (alphas between posterior cortical lobes).  ...  Source estimates and connectivity measures were mapped using Low Resolution Brain Tomography (LORETA).  ...  Using a novel wireless EEG device (Neural Activity Tracker-1) and a novel in-house developed statistical algorithm we investigated electrophysiological changes in sleep structure and EEG power spectral  ... 
doi:10.1186/s40810-016-0021-4 fatcat:iynffofbojdx3nspgskpizfwt4

Selected Abstracts of Conference Presentations at the 2009 International Society for Neurofeedback and Research (ISNR) 17th Annual Conference, Indianapolis, Indiana

2009 Journal of Neurotherapy  
We also study their out-of-phase (lagged) coherence using recent advances on connectivity measures adapted to EEG data.  ...  We utilized partial and bivariate source functional connectivity procedures to examine the relationship between the ROIs in each frequency domain.  ...  Conclusions Analysis of induced gamma oscillations in a cognitive task with drug-and stress-related visual cues showed between group differences in patients with substance use disorder and patients with  ... 
doi:10.1080/10874200903334561 fatcat:d3vq5rtlcrb23ekzc554bzrdpu

Selected Abstracts of Conference Presentations at the 2008 International Society for Neurofeedback and Research (ISNR) 16th Annual Conference, San Antonio, Texas

2009 Journal of Neurotherapy  
tasks aimed to test cortical inhibitory capacity, selective attention, and cortical functional connectivity.  ...  There are often decreases in coherence (connectivity) between those areas and other critical reading areas.  ...  Varying tasks and modalities it is feasible to test functioning of practically all cortical areas of the brain.  ... 
doi:10.1080/10874200802668309 fatcat:ohwbqndhn5f3dlyidsvg2gq5om

A systematic review of the neurophysiology of mindfulness on EEG oscillations

Tim Lomas, Itai Ivtzan, Cynthia H.Y. Fu
2015 Neuroscience and Biobehavioral Reviews  
review of EEG studies of mindfulness meditation  We examined power differentials between mindfulness and a control state  Mindfulness was associated with enhanced alpha and theta power  No consistent  ...  Eligibility criteria included empirical quantitative analyses of mindfulness meditation practice and EEG measurements acquired in relation to practice.  ...  Reduced functional connectivity between cortical sources in five meditation traditions detected with lagged coherence using EEG tomography.  ... 
doi:10.1016/j.neubiorev.2015.09.018 pmid:26441373 fatcat:6amject4ljbqjklg65yw64xrzy

Abstracts

2008 Swiss Archives of Neurology and Psychiatry  
Summing significant cases in TB, QG, SY and AY across all 8 bands, using scalp coherences, in the four traditions between 0 and 3% of the connections were significantly higher in meditation than rest,  ...  Since conventional coherence ('total coherence') is uncontrollably enhanced by volume conduction, we used 'lagged coherence' that omits zero phase lag, thus only measuring connections with time delay between  ...  ROS levels, mitochondria-membrane potential and ATP levels are determined in cortical brain cells from the mice using fluorescence and bioluminescence assays.  ... 
doi:10.4414/sanp.2008.02001 fatcat:q2vqyh7qlbd7ljd2f4xphgb6ie

A graph theory-based modeling of functional brain connectivity based on EEG: A systematic review in the context of neuroergonomics

Lina Ismail, Waldemar Karwowski
2020 IEEE Access  
Moreover, this article proposes a pipeline for constructing an unweighted functional brain network from EEG data using both source and sensor methods.  ...  The mean phase coherence method, based on the "phase-locking value," was the most frequently used functional estimation technique in the reviewed studies.  ...  It is based on the use of the EEG source connectivity combined with a sliding window approach [285] .  ... 
doi:10.1109/access.2020.3018995 fatcat:cbihabctmzbs3cdt7thxrma7bm

Searching for Mindfulness in the Brain: A Process-Oriented Approach to Examining the Neural Correlates of Mindfulness

Lindsay B. Fletcher, Benjamin Schoendorff, Steven C. Hayes
2010 Mindfulness  
There has been great interest of late in trying to capture the benefits of meditation by scanning meditators' brains.  ...  This framework provides an approach to neuroscience research grounded in psychological principles and theory.  ...  and clinical psychology over the past five years.  ... 
doi:10.1007/s12671-010-0006-5 fatcat:mp2l2yfcynem5kfbni6dldwhbu

Eyes-Closed and Activation QEEG Databases in Predicting Cognitive Effectiveness and the Inefficiency Hypothesis

Kirtley Thornton, Dennis Carmody
2009 Journal of Neurotherapy  
This pattern of log-amplitude means and the lack of task interaction with any other factor indicate that task-induced attention reduces EEG power in the same proportion across the 3 bands and the 6 channels  ...  It will be shown that good qualitative similarity between simulated and experimental EEG was achieved. The examples of generating series of mandala images using experimental EEG will be demonstrated.  ...  tasks aimed to test cortical inhibitory capacity, selective attention, and cortical functional connectivity.  ... 
doi:10.1080/10874200802429850 fatcat:i7n5dc5yznbdlonrbajyvgc5ii

ABSTRACTS

2003 Journal of Neurotherapy  
The new system, Roshi II uses a "Neuro-Adap-tive" filter to reduce EEG that is high in amplitude. The "Neuro-Adaptive" filter also reduces noise and provides an EEG spectral display in real time.  ...  Training parameters were based on the client's symptom picture, EEG pattern, and knowledge of cortical functions.  ...  This stimulation protocol was derived from a more elaborate protocol associated with an energy psychology technique.  ... 
doi:10.1300/j184v07n01_05 fatcat:khlg6k2wanebvaymtzmt4a2pzm

Brain electric idiosyncrasies and commonalities of meditation states

Pascal L Faber
2015
Study III -Reduced functional connectivity between cortical sources in five meditation traditions detected with lagged coherence using EEG tomography 3 2.3.1.  ...  Reduced functional connectivity between cortical sources in five meditation traditions detected with lagged coherence using EEG tomography. Neuroimage 60(2): 1574-1586. Milz, P., P. L. Faber, D.  ... 
doi:10.5167/uzh-124504 fatcat:axkrkyu5zzajjmclcnv2pq5srm
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