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Stress Recovery Through Mindful Breathing: Convergent Neural Signatures in Around-Ear and Scalp EEG
This Publication is a joint collaboration with Brainspoke Team, King Mongkut’s University of Technology Thonburi (KMUTT Thailand), Occidental College (United States), UC Santa Barbara (United States) and Osaka University (Japan).
Abstract
Mindfulness-based interventions effectively reduce stress and anxiety, yet the neural mechanisms underlying contemplative practices and their optimal implementation parameters remain poorly understood. A critical barrier to real-world application is the absence of validated minimally invasive neural recording technologies.
Here, we simultaneously recorded full-coverage scalp and around-ear EEG during a 2×2×2 factorial design manipulating
(1) cognitive state (mental arithmetic stress vs. passive viewing),
(2) recovery strategy (mindful breathing meditation vs. mind-wandering), and
(3) sensory context (eyes open vs. eyes closed).
Mental arithmetic robustly elevated subjective stress and modulated canonical oscillatory patterns: increased midline frontal theta power (3-7 Hz), suppressed posterior alpha power (10-12 Hz), and enhanced posterior beta and gamma power (25-48 Hz).
All rest conditions reduced subjective stress following stress induction, with eyes-closed mindful breathing producing maximal reduction. Critically, mindful breathing differentially modulated temporal beta and gamma power in a context-dependent manner, with effects determined by prior cognitive state and eye position.
Eyes-closed meditation maximally suppressed gamma power within 20 seconds following arithmetic stress, whereas eyes-open meditation alone was sufficient for gamma suppression following passive viewing.
Around-ear electrodes detected these stress and meditation signatures with comparable fidelity to scalp recordings. These findings reveal that mindful breathing engages rapid, context-dependent neural regulation mechanisms and establish that wearable EEG can reliably capture these dynamics, enabling real-world stress monitoring and mindfulness guidance.
Impact Statement
Mindfulness-based interventions reduce stress, yet their neural mechanisms and optimal implementation remain unclear, partly due to limited real-world neural measurement tools.
Using simultaneous scalp and around-ear EEG, we show that mindful breathing rapidly and context-dependently regulates stress-related brain activity via changes in high-frequency EEG oscillations (i.e., gamma band activity), with effects shaped by prior cognitive state and eye condition.
Importantly, around-ear EEG captured these neural signatures with fidelity comparable to scalp recordings, enabling wearable neurotechnology for real-world stress monitoring and personalized mindfulness guidance.
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Abstract was extracted from the following publications: