Knox S S
Percept Mot Skills. 1980 Dec;51(3 Pt 1):767-75. doi: 10.2466/pms.1980.51.3.767.
The technique of passive concentration, employed by autogenic training and Transcendental Meditation for achieving relaxation, was tested here as a technique for enhancing EEG alpha. Of 30 subjects displaying between 15% and 74% alpha in their resting EEGs recruited, 10 had to be eliminated. The remaining 20 constituted two groups. One was instructed only to attempt to maintain a tone indicating alpha but given no information about technique (control group). The other was given additional instructions in passive concentration (experimental group). Both were given four 5-min. trials a day for 4 consecutive days. Heart rate and skin conductance were measured to monitor autonomic arousal. The group receiving instructions in passive concentration had significantly less alpha than the control group, which did not increase amount of alpha above baseline. The reduction of alpha in the experimental group was interpreted as resulting from beginning long training periods (20 min. per day), a practice advocated by Transcendental Meditation but discouraged by autogenic training. It was concluded that the relevance of passive concentration for alpha enhancement is doubtful.
自生训练和超觉静坐中用于实现放松的被动专注技术，在此被作为一种增强脑电图α波的技术进行测试。在招募的静息脑电图中α波比例在15%至74%之间的30名受试者中，有10名不得不被排除。其余20名受试者组成两组。一组仅被指示尝试维持一种表明α波的状态，但未被告知技术相关信息（对照组）。另一组则被给予了关于被动专注的额外指导（实验组）。两组均连续4天每天进行4次5分钟的测试。测量心率和皮肤电导率以监测自主唤醒情况。接受被动专注指导的组的α波显著少于对照组，且对照组的α波量未超过基线水平。实验组α波的减少被解释为是由于开始了较长的训练时间（每天20分钟），这是超觉静坐所提倡但自生训练所不提倡的做法。得出的结论是，被动专注对增强α波的相关性值得怀疑。
