利用参数模型提取诱发脑电（EP）及其在40Hz EEG和EP间关联研究中的应用

提出一种基于参数模型的信息处理方法，用于诱发脑电的提取，这种方法可以得到单次ＥＰ波形的无偏，最小方差估计，用刺激强度实验验证了该方法在实际情况下的有效，进一步将其应用于刺激前ＥＥＧ与ＥＰ的关联研究，得到了刺激前４０Ｈｚ的ＥＥＧ成分与晚潜伏期听觉诱发脑电幅度有极显著负相关的结果，表明刺激前及状态确定对ＥＰ有影响。

EXTRACTION OF EVOKED POTENTIAL USING PARAMETRIC MODEL AND ITS APPLICATION TO OF RELATIONSHIP BETWEEN 40Hz EEG AND EP

Based on parametric model for signal processing, we proposed a method to extract Evoded potentials (EP) from ongoing EEG. This method can get unbiased, minimum variance estimation of EP waveform. The high positive correlation between estiamted EP amplitude and stimulus intensity demonstrates the availability of the method in praCtice. Then, we apply it to study the relationship between 40Hz EEG and EP. Preliminary result showes that the amplitude of slow latency auditory EP Aught have significant correlation with the 40Hz activity of EEG.