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From State-to-Trait Meditation: Reconfiguration of Central Executive and Default Mode Networks.

Clemens C C Bauer, Susan Whitfield-Gabrieli, J L Díaz, E H Pasaye, Fernando A Barrios

eNeuro November 1, 2019 DOI: 10.1523/eneuro.0335-18.2019 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Observational functional neuroimaging study Peer reviewed
Population Experienced meditators and healthy controls
Intervention Meditation
Measures fractional amplitude of low-frequency fluctuations (fALFF), functional connectivity (FC)
Topics Meditation Default mode network
Keywords Nerve net Humans Magnetic resonance imaging Brain mapping Attention Adult Middle aged Female Functional neuroimaging Functional connectivity Top-down control Falff Mind-wandering Experienced meditators
Key findings Meditation trait was marked by reduced DMN activity and connectivity and stronger DMN-CEN anticorrelations, while meditation state and post-meditation showed increased DMN activity and connectivity. Positive diametric activity of fALFF increased during meditation and persisted afterward. The authors suggest the gradual DMN-CEN reconfiguration reflects a mechanism by which the CEN negatively regulates the DMN, possibly underlying long-term trait changes and reported well-being.

Abstract

While brain default mode network (DMN) activation in human subjects has been associated with mind wandering, meditation practice has been found to suppress it and to increase psychological well-being. In addition to DMN activity reduction, experienced meditators (EMs) during meditation practice show an increased connectivity between the DMN and the central executive network (CEN). However, the gradual change between DMN and CEN configuration from pre-meditation, during meditation, and post-meditation is unknown. Here, we investigated the change in DMN and CEN configuration by means of brain activity and functional connectivity (FC) analyses in EMs across three back-to-back functional magnetic resonance imaging (fMRI) scans: pre-meditation baseline (trait), meditation (state), and post-meditation (state-to-trait). Pre-meditation baseline group comparison was also performed between EMs and healthy controls (HCs). Meditation trait was characterized by a significant reduction in activity and FC within DMN and increased anticorrelations between DMN and CEN. Conversely, meditation state and meditation state-to-trait periods showed increased activity and FC within the DMN and between DMN and CEN. However, the latter anticorrelations were only present in EMs with limited practice. The interactions between networks during these states by means of positive diametric activity (PDA) of the fractional amplitude of low-frequency fluctuations (fALFFs) defined as [Formula: see text] revealed no trait differences but significant increases during meditation state that persisted in meditation state-to-trait. The gradual reconfiguration in DMN and CEN suggest a neural mechanism by which the CEN negatively regulates the DMN and is probably responsible for the long-term trait changes seen in meditators and reported psychological well-being.

Comparable studies

Other experimental studies on default mode network, most cited first.

Study Year Design Participants
Functional connectivity of default mode network components: Correlation, anticorrelation, and causality Healthy subjects 2008 Observational study using resting-state fMRI and seed correlation analysis
Patterns of Brain Activity Supporting Autobiographical Memory, Prospection, and Theory of Mind, and Their Relationship to the Default Mode Network Healthy subjects 2009 Experimental study using fMRI
Dynamic reconfiguration of the default mode network during narrative comprehension Human subjects 2016 Experimental study
Broadband Cortical Desynchronization Underlies the Human Psychedelic State Healthy human participants 2013 Experimental study
The brain on art: intense aesthetic experience activates the default mode network Human observers 2012 Observational study with fMRI and behavioral analysis

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