Mindfulness Training is Associated with Changes in Alpha-Theta Cross-Frequency Dynamics During Meditation
Mindfulness Training is Associated with Changes in Alpha-Theta Cross-Frequency Dynamics During Meditation
复制标题
正念训练与冥想期间 Alpha-Theta 交叉频率动态的变化有关
DOI：
10.1007/s12671-020-01487-3
复制
发表时间：
2020
期刊：
影响因子：
3.6
通讯作者：
K. Alaerts
中科院分区：
文献类型：
--
作者：
J. Rodriguez;K. Wong;Julian Lim;K. Alaerts
以往的文献表明，跨频率相位同步是信息在大脑中传输和协调的一种机制。由于交叉频率相位同步仅在两个振荡器形成谐波频率比（例如，2：1，3：1），最近的理论假设，不同频率的脑振荡之间的相互作用通过谐波/非谐波交叉频率排列的瞬时发生而被促进/阻碍。在这条线上，最近的证据表明，在有经验的练习者的冥想状态期间，α（8-14 Hz）和θ（4-8 Hz）节奏之间的2：1谐波关系会减少。在本研究中，我们调查了在冥想练习过程中，新手的正念训练是否与α-θ交叉频率动态的纵向变化相关。36名参与者（平均年龄= 30.3岁; 2名男性）接受了为期8周的正念训练计划，该计划基于正念减压（MBSR）教学大纲，并在训练前后的引导冥想期间进行脑电图（EEG）记录（64个电极）。正念训练的依从性（通过在家出勤和练习的分钟数来量化）与冥想过程中α和θ节律之间的3：1谐波和交叉频率相位同步性下降显著相关。新手的正念训练被证明与冥想期间α-θ交叉频率耦合的减少有关。基于α-θ交叉频率动态的EEG参数可能足以量化和/或促进正念冥想训练。
Previous literature suggests that cross-frequency phase synchronization is a mechanism by which information is transmitted and coordinated in the brain. Since cross-frequency phase synchronization is only strictly possible when two oscillators form a harmonic frequency ratio (e.g., 2:1, 3:1), a recent theory posited that interactions between brain oscillations at different frequencies are facilitated/hindered by the transient occurrence of harmonic/non-harmonic cross-frequency arrangements. In this line, recent evidence has shown that 2:1 harmonic relationships between alpha (8–14 Hz) and theta (4–8 Hz) rhythms are reduced during meditative states in experienced practitioners. In the present study, we investigated whether mindfulness training in novices is associated with longitudinal changes in alpha-theta cross-frequency dynamics during meditation practice. Thirty-six participants (mean age = 30.3; 2 men) underwent an 8-week mindfulness training program based on the mindfulness-based stress reduction (MBSR) syllabus and electroencephalography (EEG) recordings (64 electrodes) were performed during a guided meditation before and after the training. Mindfulness training compliance (quantified by minutes of attendance and practice at home) was significantly correlated to decreased 3:1 harmonicity and cross-frequency phase synchrony between alpha and theta rhythms during meditation. Mindfulness training in novices was shown to be associated with a reduction in alpha-theta cross-frequency coupling during meditation. EEG parameters based on alpha-theta cross-frequency dynamics may be adequate for quantifying and/or facilitating mindfulness meditation training.
影响因子：
5.7
作者：
Popov, Tzvetan;Popova, Petia;Miller, Gregory A.
通讯作者：
Miller, Gregory A.
影响因子：
12.8
作者：
Keng, Shian-Ling;Smoski, Mona J.;Robins, Clive J.
通讯作者：
Robins, Clive J.