Gregson R A, Britton L A, Campbell E A, Gates G R
Department of Psychology, University of New England, Armidale, Australia.
Biol Psychol. 1990 Oct;31(2):173-91. doi: 10.1016/0301-0511(90)90016-p.
Comparison of the characteristics of electroencephalogram (EEG) records treated as realizations from a nonlinear process were compared under four different conditions: eyes shut resting, and three silent observation instructions to predict the patterns of randomly generated lights which illuminated every 10 seconds. The correlation dimension of the EEG was calculated by a method involving finding the correlation integral in m-dimensional space, and found to show some variations within time series. The degree and directions of changes in the dimensionality of the process varied between observers and did not clearly confirm some earlier reported findings, but it is demonstrable that the measures of nonlinear brain dynamics can be correlated with psychological variables. Reasons for this are discussed.
将脑电图（EEG）记录的特征视为非线性过程的实现，在四种不同条件下进行了比较：闭眼休息，以及三种无声观察指令，以预测每10秒亮起一次的随机生成灯光的模式。EEG的关联维数通过在m维空间中寻找关联积分的方法计算得出，发现在时间序列内呈现出一些变化。该过程维数变化的程度和方向在观察者之间有所不同，并未明确证实一些早期报道的结果，但可以证明非线性脑动力学的测量值与心理变量相关。文中讨论了其原因。
