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在分析传统的诱发电位提取的叠加平均理论缺陷的基础上,根据对自发脑电信号特性的认识和诱发电位提取的特定环境,提出了闪光视觉诱发电位(FVEP)单次提取的自参考自相关自适应干扰对消理论和技术(AAA-ICT)。该技术用求诱发脑电信号与参考信号的逐点滑动相关的方法,获得与诱发脑电信号有最大相关的参考信号段,用最小二乘原理(LSM)求取诱发脑电信号中有最大相关的参考信号段的对消因子W,然后进行干扰对消以获得单次提取的FVEP。用该技术能够有效地提取FVEP信号,并能获得单个受试者FVEP的变异性。
Based on the analysis of the traditional superposition averaging defect of evoked potential extraction and based on the recognition of spontaneous EEG signals and the specific environment of evoked potential extraction, a self-referential autocorrelation of single extraction of flash visual evoked potential (FVEP) Adaptive Interference Cancellation Theory and Technology (AAA-ICT). This technique uses the point-by-point slippage-related method of evoked EEG and reference signals to obtain the reference signal segment that has the maximum correlation with the evoked EEG signal. Least-square principle (LSM) The cancellation factor W of the relevant reference signal segment, and then perform interference cancellation to obtain a single extracted FVEP. With this technique, the FVEP signal can be efficiently extracted and the variability of FVEP in a single subject can be obtained.