Maurer K, Dierks T
EEG EMG Z Elektroenzephalogr Elektromyogr Verwandte Geb. 1987 Mar;18(1):4-12.
Brain mapping of EEG and evoked potentials permits the topographic display of electrical activity of the brain and is superior to conventional polygraphic procedures. Data from 16 scalp electrodes and two ear reference electrodes were worked up. The spontaneous EEG and the EEG during different testing conditions to activate particular brain regions was measured. 2 s EEG data segments were subjected to spectral analysis by a fast Fourier transformation (FFT). For late evoked potentials (VEP, AEP, SEP and P300) a single value representing the amplitude of EP at each 2-ms poststimulus latency point served for subsequent topographic mapping. Statistical techniques (Student's t-test) have been used in conjunction with EEG and EP data to render visible the regions where a clinical population differ from normal subjects. The results show abnormalities of EEG and EP in patients with psychical und neurological diseases.
脑电图（EEG）和诱发电位的脑图谱能够对大脑电活动进行地形图显示，且优于传统的多导记录程序。对来自16个头皮电极和两个耳部参考电极的数据进行了处理。测量了自发脑电图以及在不同测试条件下激活特定脑区时的脑电图。对2秒的脑电图数据段进行快速傅里叶变换（FFT）频谱分析。对于晚期诱发电位（视觉诱发电位、听觉诱发电位、体感诱发电位和P300），在每个刺激后2毫秒潜伏期点代表诱发电位幅度的单个值用于后续的地形图绘制。统计技术（学生t检验）已与脑电图和诱发电位数据结合使用，以显示临床人群与正常受试者不同的区域。结果显示，患有精神和神经疾病的患者脑电图和诱发电位存在异常。
