Gaillard J M
Biotelemetry. 1974;1(4):219-26.
A method is proposed for spectral analysis of EEG recordings of long duration, using a set of band-pass filters. The sensitivity of the filters varies continuously over their full range, and the input signal is sampled at every sensitivity level. The full spectrum is presented as an array of numbers where the columns are the frequencies and the rows the sensitivity levels, printed as a percentage of the total possible responses of the filter (percent of activity). The logarithm of the numbers expressing the activity of a filter are used for the calculation of the regression line. Thus, the activity in each frequency is characterized by two parameters, the slope and the ordinate at origin, the slope being the more interesting one.
提出了一种使用一组带通滤波器对长时间脑电图记录进行频谱分析的方法。滤波器的灵敏度在其整个范围内连续变化，并且在每个灵敏度水平对输入信号进行采样。全频谱以数字阵列的形式呈现，其中列是频率，行是灵敏度水平，以滤波器总可能响应的百分比（活动百分比）打印。用于计算回归线的是表示滤波器活动的数字的对数。因此，每个频率的活动由两个参数表征，即斜率和原点处的纵坐标，斜率更具意义。
