The default mode network and EEG alpha oscillations: An independent component analysis
Gennady G. Knyazev, Jaroslav Y. Slobodskoj-Plusnin, Andrey V. Bocharov, Liudmila V. Pylkova
Brain Research June 3, 2011 DOI: 10.1016/j.brainres.2011.05.052 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Observational study Peer reviewed |
|---|---|
| Population | Human participants |
| Topics | Default mode network |
| Citations | 261 |
| Key findings | Only alpha band EEG patterns showed considerable overlap with the DMN and high correlations with DMN function-related outcomes during rest and a social game task. |
Abstract
The default mode network (DMN) has been principally investigated using positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) and has received mixed support in electroencephalographic (EEG) studies. In particular, the existing evidence is too inconsistent to allow formulation of specific hypotheses linking DMN activity to traditional EEG frequency bands. In this study, we aimed to test whether blind decomposition methods are able to identify in EEG data spatial patterns resembling the DMN as it is described in PET and fMRI studies. Further we aimed to test a degree of task-relatedness of DMN patterns identified in the traditional EEG frequency bands. To answer these questions we collected data both in a resting state and during performance of two experimental tasks: an explicit judgment of facial affect and a social game task. Individual differences in amount of self-referential thoughts during the resting state were measured by a short self-report scale. Only alpha band spatial patterns simultaneously showed a considerable overlap with the DMN and high correlations with presumptive DMN function-related outcomes both in the resting state and during the social game task. Spontaneous self-referential thoughts were associated with enhanced alpha activity in the posterior DMN hub, whereas processing of DMN function-related external stimuli disrupted this activity and simultaneously caused partial alpha phase-locking to external events. This evidence implies that synchronization of internal mental processes, as opposed to the processing of external stimuli, might be the primary function of alpha oscillations which is bound to be related to activity of the DMN.
Comparable studies
Other observational and cohort studies on default mode network, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| A default mode of brain function Normal adult human brain | 2001 | Observational study | |
| Resting-State Functional Connectivity Reflects Structural Connectivity in the Default Mode Network Healthy subjects | 2008 | Observational cohort | |
| Meditation experience is associated with increased cortical thickness Participants with extensive Insight meditation experience and matched controls | 2005 | Observational cohort | n = 20 |
| Meditation experience is associated with differences in default mode network activity and connectivity Experienced meditators and matched meditation-naive controls | 2011 | Observational cohort | |
| The precuneus/posterior cingulate cortex plays a pivotal role in the default mode network: Evidence from a partial correlation network analysis Healthy subjects | 2008 | Observational study |
Citations in the library
Cited by 41
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- Neural Correlates of Non-ordinary States of Consciousness in Pranayama Practitioners: The Role of Slow Nasal Breathing Frontiers in Systems Neuroscience March 21, 2022
- The Role of the Brain in Conscious Processes: A New Way of Looking at the Neural Correlates of Consciousness Frontiers in Psychology August 3, 2018
and 36 more in the library
Cites 10
- A default mode of brain function Proceedings of the National Academy of Sciences January 16, 2001
- The precuneus/posterior cingulate cortex plays a pivotal role in the default mode network: Evidence from a partial correlation network analysis Neuroimage June 13, 2008
- Frontal theta EEG activity correlates negatively with the default mode network in resting state International Journal of Psychophysiology July 13, 2007
- BOLD correlates of EEG alpha phase-locking and the fMRI default mode network Neuroimage January 15, 2009
- EEG default mode network in the human brain: Spectral regional field powers Neuroimage January 17, 2008
and 5 more in the library