Medical & Biological Engineering & Computing ( IF 2.6 ) Pub Date : 2021-03-17 , DOI: 10.1007/s11517-021-02332-y Pedro Morais 1 , Claúdia Quaresma 1 , Ricardo Vigário 1 , Carla Quintão 1
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In this paper, we evaluate the effects of mindfulness meditation training in electrophysiological signals, recorded during a concentration task. Longitudinal experiments have been limited to the analysis of psychological scores through depression, anxiety, and stress state (DASS) surveys. Here, we present a longitudinal study, confronting DASS survey data with electrocardiography (ECG), electroencephalography (EEG), and electrodermal activity (EDA) signals. Twenty-five university student volunteers (mean age = 26, SD = 7, 9 male) attended a 25-h mindfulness-based stress reduction (MBSR) course, over a period of 8 weeks. There were four evaluation periods: pre/peri/post-course and a fourth follow-up, after 2 months. All three recorded biosignals presented congruent results, in line with the expected benefits of regular meditation practice. In average, EDA activity decreased throughout the course, −64.5%, whereas the mean heart rate displayed a small reduction, −5.8%, possibly as a result of an increase in parasympathetic nervous system activity. Prefrontal (AF3) cortical alpha activity, often associated with calm conditions, saw a very significant increase, 148.1%. Also, the number of stressed and anxious subjects showed a significant decrease, −92.9% and −85.7%, respectively. Easy to practice and within everyone’s reach, this mindfulness meditation can be used proactively to prevent or enhance better quality of life.
Graphical abstract
中文翻译：
专注力测试中正念冥想的电生理效应
在本文中，我们评估了正念冥想训练对集中任务期间记录的电生理信号的影响。纵向实验仅限于通过抑郁、焦虑和压力状态分析心理评分(DASS) 调查。在这里，我们提出了一项纵向研究，将 DASS 调查数据与心电图 (ECG)、脑电图 (EEG) 和皮肤电活动 (EDA) 信号进行对比。25 名大学生志愿者（平均年龄 = 26，SD = 7，9 名男性）参加了为期 8 周的 25 小时正念减压 (MBSR) 课程。有四个评估期：课程前/课程期间/课程后和 2 个月后的第四次随访。所有三个记录的生物信号都呈现出一致的结果，符合常规冥想练习的预期好处。平均而言，EDA 活动在整个过程中下降 -64.5%，而平均心率显示小幅下降 -5.8%，可能是副交感神经系统活动增加的结果。前额叶 (AF3) 皮质 α 活动，通常与平静的条件相关，看到了非常显着的增长，148.1%。此外，压力和焦虑的受试者数量显着减少，分别为 -92.9% 和 -85.7%。这种正念冥想易于练习且在每个人的范围内，可主动用于预防或提高生活质量。
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