Pfurtscheller G, Cooper R
Electroencephalogr Clin Neurophysiol. 1975 Feb;38(2):187-90. doi: 10.1016/0013-4694(75)90229-1.
Individual click evoked responses recorded in the right and left frontal lobe in man have been correlated with different templates, that is, particular wave shapes of evoked responses, and from the maxima of the cross correlation functions individual estimates were obtained of amplitude and latency. Averages were then made of evoked responses having particular amplitude and/or latency values. Using such selected trials for averaging, better results were obtained and artificial amplitude damping avoided. It was found for example that the component N90 varied in latency between 75 and 100 msec and was linked with the behaviour of the contralateral recorded potential amplitude of P150. Furthermore it was found that the biphasic potential N230 P430 was very unstable in latency and the amplitude of the averaged potential using all trials was about 30% too small.
在人类左右额叶记录的个体点击诱发反应已与不同模板相关联，即诱发反应的特定波形，并且从互相关函数的最大值获得了振幅和潜伏期的个体估计值。然后对具有特定振幅和/或潜伏期值的诱发反应进行平均。使用此类选定试验进行平均，获得了更好的结果并避免了人为的振幅衰减。例如，发现成分N90的潜伏期在75至100毫秒之间变化，并与对侧记录的P150电位振幅的行为相关。此外，还发现双相电位N230 P430的潜伏期非常不稳定，使用所有试验进行平均得到的电位振幅大约小30%。
