Deprés-Brummer P, Metzger G, Lévi F
Laboratoire Rythmes Biologiques et Chronothérapeutiques, Université Paris XI, Villejuif, France.
Pathol Biol (Paris). 1996 Mar;44(3):150-6.
We have previously observed a light-induced suppression of circadian rhythms of body temperature and locomotor activity in 50/55 male Sprague Dawley rats (Am. J. Physiol., 1995). This study presents a description of 4 records of body temperature obtained by telemetry and compares three methods of period analysis (Fourier analysis, autocorrelation and cosinor). In case of persistant circadian rhythms, Fourier analysis and cosinor method agree and allow description of rhythm parameters. However, in case of an alteration of the circadian system in continuous light, these 2 methods can disagree on the dominant period. Autocorrelation analysis permits to conclude on the absence of circadian and ultradian rhythmicity. These results demonstrate the necessity to associate several methods for period analysis and plaids for the development of a strategy for data processing of longitudinal time series.
我们之前观察到，在50/55只雄性斯普拉格-道利大鼠中，光照会抑制体温和运动活动的昼夜节律（《美国生理学杂志》，1995年）。本研究描述了通过遥测获得的4份体温记录，并比较了三种周期分析方法（傅里叶分析、自相关分析和余弦分析）。在持续存在昼夜节律的情况下，傅里叶分析和余弦分析方法结果一致，能够描述节律参数。然而，在持续光照下昼夜节律系统发生改变的情况下，这两种方法在主导周期上可能会出现分歧。自相关分析可以得出昼夜节律和超昼夜节律不存在的结论。这些结果表明，有必要结合多种周期分析方法和方案，来制定纵向时间序列数据处理策略。
