Dyson R J, Thornton C, Doré C J
Sleep. 1984;7(2):180-8. doi: 10.1093/sleep/7.2.180.
This study investigated the use of electroencephalographic (EEG) electrode placements outside the hairline to monitor sleep. Six subjects slept for 1 night during which the EEG was recorded from "standard" electrode placements and simultaneously from the "test" placements outside the hairline where adhesive pregelled electrodes could be used. Each subject's EEG record was scored independently by two observers. The standard and test electrode placements were assessed separately. Cohen's kappa (kappa) was used to quantify the agreement in the sleep scores (a) between observers when both scored the standard placements and (b) between the test and standard placements when scored by the same observer. The agreement for all stages between observers (a) was excellent (kappa = 0.82); and the agreement within observers, between placements (b) was even better [kappa = 0.86 for the six sleep stages considered separately; when stages awake/1 and 3/4 were combined (a) kappa = 0.88 and (b) kappa = 0.09]. It is concluded that EEG electrode placements outside the hairline can be used effectively to record sleep EEGs. The adoption of these electrode placements would simplify the monitoring procedure for many applied physiological studies especially when usual laboratory techniques for EEG are precluded.
本研究调查了使用发际线外的脑电图（EEG）电极位置来监测睡眠的情况。六名受试者睡了一晚，在此期间，从“标准”电极位置记录脑电图，同时从发际线外的“测试”位置记录脑电图，在该测试位置可使用粘性预凝胶电极。两名观察者分别对每个受试者的脑电图记录进行评分。对标准电极位置和测试电极位置分别进行评估。使用科恩kappa系数（kappa）来量化睡眠评分中的一致性：（a）两名观察者对标准位置进行评分时的一致性；（b）同一观察者对测试位置和标准位置进行评分时的一致性。观察者之间在所有睡眠阶段的一致性（a）非常好（kappa = 0.82）；观察者内部不同位置之间的一致性（b）甚至更好[分别考虑六个睡眠阶段时kappa = 0.86；当将清醒/1期和3/4期合并时，（a）kappa = 0.88，（b）kappa = 0.90]。得出的结论是，发际线外的EEG电极位置可有效地用于记录睡眠脑电图。采用这些电极位置将简化许多应用生理学研究的监测程序，特别是在无法使用常规脑电图实验室技术的情况下。
