An Interpretation of the Internal Desynchronizations Based on Dynamics of the Two-process Model
An Interpretation of the Internal Desynchronizations Based on Dynamics of the Two-process Model
复制标题
基于二过程模型动力学的内部失同步解释
DOI：
10.1055/s-0038-1636849
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发表时间：
1997
影响因子：
1.7
通讯作者：
M. Yamamoto
中科院分区：
文献类型：
--
作者：
M. Nakao;H. Sakai;M. Yamamoto
摘要。Daan的双过程模型被认为是最强大的模型之一，涵盖了从自由奔跑到睡眠剥夺的各种情况。在本研究中，利用圆图阐明了模型动力学的分岔性质。此外，双过程模型应用于模拟两种不同的模式（周期延长：I和周期缩短：II）的睡眠-觉醒周期在内部去同步。我们提出了一种新的解释，即I型和II型可视为体温节律和睡眠-觉醒周期之间的相互夹带，周期比分别为3:4和3:2。从上述两过程模型的分岔特性可以看出，该模型能够在一个参数值的适当范围内，即阈值之间的间隙，生成各自类型的相互夹带。基于双过程模型的分岔特性，提出了对人类昼夜节律变化行为的系统理解。
Abstract. Daan’s two-process model is known to be one of the most powerful models, covering various situations from free-running to sleep deprivation. In this study, bifurcation properties of the model dynamics are clarified using a circle map. In addition, the two-process model is applied to simulate the two distinct patterns (the period-prolonged: I and the period-shortened: II) of sleep-wake cycles during internal desynchronizations. We propose the novel interpretation that types I and II could be regarded as mutual entrainments between the body temperature rhythm and the sleep-wake cycle with the period ratios 3:4 and 3:2, respectively. From the bifurcation properties of the two-process model obtained above, the model is shown to be able to generate the respective type of mutual entrainment with an appropriate range of a parameter value, i.e, a gap between thresholds. The variable behavior of human circadian rhythm is suggested to be systematically understood based on the bifurcation properties of the two-process model.
影响因子：
56.9
作者：
CZEISLER, CA;WEITZMAN, ED;KNAUER, RS
通讯作者：
KNAUER, RS