阵发性40Hz脑电信号提取方法的研究

A Study on the Method of Extraction for 40 Hz EEG Bursts

用频域门限提取法与神经网络模式识别相结合的方法实现阵发性４０ＨｚＥＥＧ的有效检测，对１０多位受试者的阵发性４０ＨｚＥＥＧ进行了提取，计算了平均峰值功率，分析了各受试者所表现的思维状态，结果表明，提出的检测方法是切实可行的，并支持了Ｄ．Ｅ．Ｓｈｅｅｒ的理论。

The bursts of 40HzEEG are a reliable indicator of the ' focused arousal '. It hasan active significance in diagnosis of cognitive dysfunction.But, the bursts of 40 Hz EEG are seriously interfered by the high amplitude broad-band EMG signals from the scalp. It causes the difficulty of detection, This paper give a new method uf the combination of threshold extraction in frequency domain and neural network pattern recognition to realize the effective detection of 40 Hz EEGbursts , and reports the mean peak power of the 40 HZ EEG bursts for 11 subjects and analyses theirthinking states, The reaults indicate that the method given in this paper can be used feasibly and support the theory given by D,E, Sheer.