Willey T J, Roos F, Hunt G M
Biotelemetry. 1975;2(6):329-40.
The EEG represents brain processing under diverse physiological conditions. A complete system involving acquisition and quantitation of this important information about brain function is described. The time-domain EEG and other biological signals are obtained using a multichannel PAM/FM biotelemeter mounted on the head of the experimental animal. This data is transmitted, demodulated and recorded by electronic recording techniques. A computer-based EEG analysis system is described for acquiring the primary data and transforming it into the frequency domain using Fourier methods. The computing system is developed to semi-automatically signal process about 4 h of eight channel EEG records. Data compression by plotting in a quasi-three-dimensional spectral profile allows visual correlations of pattern features to drug manipulations, etc. The software programs are briefly described for each step in signal processing. The feasibility of the complete system approach is demonstrated using biotelemetry to acquire low voltage EEG signals without behavioral distortions or introduction of artifacts by cables.
脑电图代表了不同生理条件下的大脑活动过程。本文描述了一个完整的系统，该系统涉及获取和量化有关脑功能的这一重要信息。使用安装在实验动物头部的多通道脉幅调制/调频生物遥测仪来获取时域脑电图和其他生物信号。这些数据通过电子记录技术进行传输、解调并记录。描述了一个基于计算机的脑电图分析系统，用于获取原始数据并使用傅里叶方法将其转换到频域。该计算系统被开发用于对约4小时的八通道脑电图记录进行半自动信号处理。通过绘制准三维频谱图进行数据压缩，能够直观地将模式特征与药物处理等进行关联。简要描述了信号处理每个步骤的软件程序。通过使用生物遥测技术来获取低电压脑电图信号，且不会因行为干扰或电缆引入伪迹，证明了完整系统方法的可行性。
