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Combining Behavior and EEG to Study the Effects of Mindfulness Meditation on Episodic Memory
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Shifting Baselines: Longitudinal Reductions in EEG Beta Band Power Characterize Resting Brain Activity with Intensive

Alea C Skwara1, Brandon G King1, Anthony P Zanesco1

  • 1Center for Mind and Brain, University of California, Davis, 267 Cousteau Place, Davis, CA 95616 USA.

Mindfulness
|October 19, 2022
PubMed
Summary

Meditation training reduces beta band power in the resting brain, indicating that cognitive benefits extend beyond formal practice. These neurocognitive changes suggest meditation influences spontaneous brain activity, blurring state and trait distinctions.

Keywords:
BetaDomain generalizationEEGMeditationResting stateState versus trait

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Mindfulness Studies

Background:

  • Meditation training is assumed to enhance cognitive abilities transferable to daily life.
  • Previous research linked mindfulness meditation to reduced EEG beta band power during practice.
  • The study investigates if these EEG changes occur during resting states.

Purpose of the Study:

  • To determine if meditation training alters spontaneous brain activity during rest.
  • To examine neurocognitive effects of focused attention meditation beyond formal practice.
  • To assess changes in resting-state EEG spectral power after 3 months of meditation.

Main Methods:

  • Experienced meditators participated in a 3-month focused attention meditation retreat.
  • A waitlist control group also underwent a 3-month retreat.
  • Resting-state EEG data (88-channel) were analyzed using permutation-based cluster analysis.

Main Results:

  • Significant longitudinal reductions in EEG beta band power were observed during rest.
  • Replicated findings across two independent training groups.
  • Less pronounced reductions were noted in alpha frequency bands.

Conclusions:

  • Meditation training's neurocognitive effects extend to resting-state brain activity.
  • Resting brain activity reflects training-induced changes, challenging the concept of an invariant baseline.
  • Findings suggest a blurring of state and trait changes due to meditation practice.