Ehrenberg B L, Penry J K
Electroencephalogr Clin Neurophysiol. 1976 Jul;41(1):25-36. doi: 10.1016/0013-4694(76)90212-1.
Twelve 12h daytime telemetered EEGs were read for generalized spike-wave (S-W) bursts by a computer and independently by three experienced electroencephalographers. The computer system was a hybrid of analog devices (tape-recorder, voltage summator, and high-pass filters) and a multipurpose laboratory digital device (PDP-12). The computer was programmed to identify only the location on the record and the duration of the generalized S-W paroxysms. From 1,462 discharges identified by both the readers and the computer, a consensus list of 609 was derived by selecting only those bursts identified by all three readers. The computer recognized 516 (85%) of those bursts on the consensus list; the computer's accuracy, as compared with the consensus, rose to 92% when portions of the EEG containing sleep were discounted. The computer also recognized as generalized S-W paroxysms 15 high-voltage transients, which none of the three readers selected. Ten of these, however, occurred during sleep. When the computer results were added to those of the three readers to permit a four-way inter-reader comparison, the computer was found to have had about as many isolated decisions as any of the three readers. In the number of bursts recognized, the computer tended to be about as conservative as the reader under whose guidance it was originally programmed. The computer's accuracy in measuring burst duration was not evaluated statistically.
由计算机和三位经验丰富的脑电图专家分别对12份12小时的日间遥测脑电图进行了广泛棘波 - 慢波(S - W)爆发的判读。计算机系统是模拟设备(磁带录音机、电压求和器和高通滤波器)与多功能实验室数字设备(PDP - 12)的混合体。计算机被编程为仅识别记录上广泛S - W阵发的位置和持续时间。在读者和计算机都识别出的1462次放电中,通过仅选择所有三位读者都识别出的那些爆发,得出了一份609次的共识列表。计算机识别出了该共识列表中的516次(85%);与共识相比,当排除包含睡眠的脑电图部分时,计算机的准确率提高到了92%。计算机还将15次高压瞬变识别为广泛S - W阵发,而三位读者都未选择这些瞬变。然而,其中10次发生在睡眠期间。当将计算机的结果与三位读者的结果相加以进行四者之间的读者间比较时,发现计算机的单独判断数量与三位读者中的任何一位大致相同。在识别出的爆发数量上,计算机的保守程度往往与最初为其编程的读者大致相同。未对计算机测量爆发持续时间的准确性进行统计学评估。