Isaksson A, Wennberg A
Electroencephalogr Clin Neurophysiol. 1975 Oct;39(4):313-20. doi: 10.1016/0013-4694(75)90094-2.
In 1969 Zetterberg presented a method for describing the spectral properties of an EEG signal, starting from the assumption that the signal is essentially stationary during the analysis epoch. The method involves determination of the parameters for a model consisting of a lenear filter with the ability to produce a signal with the same spectral properties as the EEG signal. Zetterberg and Ahlin described in 1975 an analogue simulator based on this model theory. With this simulator it is possible to reproduce practically all types of stationary, as well as a number of non-stationary, EEG signals. We have used this simulator to demonstrate in an illustrative manner the relation between the properties of a signal in the spectral domain and in the time domain. We have also endeavoured to anser the question: if one starts from the frequency spectrum, what does the EEG signal corresponding to this spectrum look like? We also draw attention to the usefulness of the simulator in connection with training and as an instrument for testing computer and other systems of EEG analysis.
1969年，泽特伯格提出了一种描述脑电图（EEG）信号频谱特性的方法，该方法始于这样一个假设：在分析时段内，信号本质上是平稳的。该方法涉及确定一个模型的参数，该模型由一个线性滤波器组成，该滤波器能够产生具有与EEG信号相同频谱特性的信号。泽特伯格和阿林在1975年描述了一种基于该模型理论的模拟模拟器。使用这个模拟器，几乎可以重现所有类型的平稳EEG信号以及一些非平稳EEG信号。我们使用这个模拟器以一种说明性的方式展示了信号在频域和时域中的特性之间的关系。我们还努力回答了这个问题：如果从频谱开始，与该频谱对应的EEG信号是什么样的？我们还提请注意该模拟器在培训方面的有用性，以及作为测试脑电图分析计算机和其他系统的工具。
