Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany.
Brain Products GmbH, Germany.
Neurosci Lett. 2019 May 14;701:142-145. doi: 10.1016/j.neulet.2019.02.035. Epub 2019 Feb 22.
Neuronal interactions coupled by phase synchronization have been studied in a wide range of frequency bands, but fluctuations below the delta frequency have often been neglected. In the present study, phase synchrony in slow cortical potentials (SCPs, 0.01-0.1 Hz) was examined during two different mental states; a resting state and a breath-focused mindfulness meditation. SCP phase synchrony in 9 long-term expert meditators (on average 22 years of experience) were compared with the data obtained from 11 novices. Additionally, after the novices attended an 8-week mindfulness-based stress reduction (MBSR) program, SCP phase synchrony was measured again. While expert meditators and novices exhibited the same amount of SCP phase synchrony in the resting state, decreased synchronization was found during meditation among expert meditators as well as novices who had participated in the MBSR program (but not prior to the program). These findings suggest that phase synchrony in slow cortical activity is context-dependent and could provide crucial information in the study of the human mind.
已在广泛的频率范围内研究了通过相位同步耦合的神经元相互作用，但通常忽略了低于 delta 频率的波动。在本研究中，在两种不同的心理状态下，即休息状态和专注呼吸的正念冥想状态，检查了慢皮质电位（SCP，0.01-0.1 Hz）的相位同步。将 9 名长期专业冥想者（平均 22 年经验）的 SCP 相位同步与从 11 名新手获得的数据进行了比较。此外，新手参加 8 周正念减压（MBSR）课程后，再次测量了 SCP 相位同步。虽然专家冥想者和新手在休息状态下表现出相同数量的 SCP 相位同步，但在冥想期间，专家冥想者和参加 MBSR 课程的新手（但不是在课程之前）的同步性降低。这些发现表明，慢皮质活动中的相位同步是上下文相关的，并且可以为人类思维的研究提供关键信息。
