Cram J R, Kohlenberg R J, Singer M
Psychosom Med. 1977 Jan-Feb;39(1):11-8. doi: 10.1097/00006842-197701000-00002.
The effects of eyelid position (open or closed) and three levels of room illumination on operant control of alpha EEG were investigated utilizing a factorial design. After base-line levels were determined, subjects were given alpha-contingent feedback and instructed to increase and decrease alpha production during six successive 4-min intervals. In addition, a comparison was made between percent time and average amplitude as dependent measures. The percent time data indicated that eyes-open training facilitated alpha enhancement and suppression. However, this was not supported by the average amplitude data. Ambient illumination, regardless of the measure utilized, facilitated alpha training, particularly when the eyes were open. These results are related to previous research and theoretical issues.
采用析因设计研究了眼睑位置（睁开或闭合）和三种室内光照水平对脑电图α波操作性控制的影响。在确定基线水平后，给予受试者α波相关反馈，并指示他们在连续六个4分钟的时间段内增加和减少α波的产生。此外，还对作为因变量的时间百分比和平均振幅进行了比较。时间百分比数据表明，睁眼训练有助于α波增强和抑制。然而，平均振幅数据并不支持这一点。无论采用何种测量方法，环境光照都有助于α波训练，尤其是在睁眼时。这些结果与先前的研究和理论问题相关。
