Knowles J B, MacLean A W, Cairns J
Biol Psychiatry. 1982 Sep;17(9):993-1002.
Unlike sleep stages, which are assessed by standardized criteria, an informal survey by us showed that the definition of REM latency is relatively idiosyncratic. Differences in definition arise for two reasons: Differences in the definition of sleep onset, and the inclusion or exclusion of wakefulness that may occur prior to the first REM period. Seven definitions are identified. Each was applied to 70 records taken from 14 depressed patients, 5 remitted depressives, and 5 normal subjects. In all three samples, REM latencies calculated on the basis of the different definitions differed significantly. Reasons for adopting a common definition are discussed. It is suggested that, if established, the reliability and validity (concurrent and predictive) of the available measures would provide an empirical basis for selection.
与通过标准化标准评估的睡眠阶段不同，我们进行的一项非正式调查显示，快速眼动睡眠潜伏期的定义相对因人而异。定义存在差异有两个原因：睡眠开始定义的差异，以及首次快速眼动睡眠期之前可能出现的清醒状态的纳入或排除。我们确定了七种定义。每种定义都应用于从14名抑郁症患者、5名缓解期抑郁症患者和5名正常受试者中获取的70份记录。在所有三个样本中，基于不同定义计算出的快速眼动睡眠潜伏期存在显著差异。文中讨论了采用通用定义的原因。有人建议，如果能够确定，现有测量方法的可靠性和有效性（同时性和预测性）将为选择提供实证依据。
