Travis Frederick, Arenander Alarik
Brain Consciousness and Cognition Lab, Maharishi University of Management, Fairfield, Iowa 52557, USA.
Int J Neurosci. 2006 Dec;116(12):1519-38. doi: 10.1080/00207450600575482.
Two studies investigated frontal alpha lateral asymmetry and frontal interhemispheric coherence during eyes-closed rest, Transcendental Meditation (TM) practice, and computerized reaction-time tasks. In the first study, frontal coherence and lateralized asymmetry were higher in 13 TM subjects than in 12 controls. In the second study (N = 14), a one-year longitudinal study, lateral asymmetry did not change in any condition. In contrast, frontal coherence increased linearly during computer tasks and eyes-closed rest, and as a step-function during TM practice--rising to a high level after 2-months TM practice. Coherence was more sensitive than lateral asymmetry to effects of TM practice on brain functioning.
两项研究调查了闭眼休息、超觉静坐（TM）练习和计算机化反应时间任务期间的额叶α波侧不对称性和额叶半球间连贯性。在第一项研究中，13名TM受试者的额叶连贯性和侧化不对称性高于12名对照组。在第二项研究（N = 14）中，一项为期一年的纵向研究发现，在任何情况下侧不对称性都没有变化。相比之下，在计算机任务和闭眼休息期间额叶连贯性呈线性增加，而在TM练习期间呈阶跃函数增加——TM练习2个月后升至高水平。连贯性比侧不对称性对TM练习对大脑功能的影响更敏感。
