A self-referential default brain state: patterns of coherence,power, and eLORETA sources during eyes-closed restand Transcendental Meditation practice

摘要

Activation of a default mode network (DMN)including frontal and parietal midline structures varies withcognitive load, being more active during low-load tasks andless active during high-load tasks requiring executive con-trol. Meditation practices entail various degrees of cognitivecontrol. Thus, DMN activation patterns could give insightinto the nature of meditation practices. This 10-week randomassignment study compared theta2, alphal, alpha2, beta],beta2 and gamma EEG coherence, power, and eLORETAcortical sources during eyes-closed rest and TranscendentalMeditation (TM) practice in 38 male and female collegestudents, average age 23.7 years. Significant brainwavedifferences were seen between groups. Compared toeyes-closed rest, TM practice led to higher alphal frontallog-power, and lower betal and gamma frontal and parietal