【摘 要】
：
In mammals, the suprachiasmatic nucleus (SCN) of the hypothalamus is considered as the master circadian pacemaker.Each cell in the SCN contains an autonomous molecular clock, and the SCN is composed o
【机 构】
：
College of Information Technology, Shanghai Ocean University, Shanghai 201306, China
论文部分内容阅读
In mammals, the suprachiasmatic nucleus (SCN) of the hypothalamus is considered as the master circadian pacemaker.Each cell in the SCN contains an autonomous molecular clock, and the SCN is composed of multiple single-cell circadian oscillators.The fundamental question is how the individual cellular oscillators, expressing a wide range of periods, interact and assemble to achieve phase synchronization.In this paper, we study synchronization of clocks that are indirected coupled by neurotransmitter.The numerical simulations are also given to demonstrate the theoretical results.The conclusion of this paper can help us better understand the mechanism of circadian rhythm.
其他文献
In this study, we investigated the topological property of the brain functional connect network between attention-deficit/hyperactivity disorder (ADHD) patients and normal control.
基于脑损伤信息的行为预测模型具有重要的理论和临床价值。脑损伤位置一直以来都被证明是影响脑损伤病人行为的一个重要因素。在以往的脑损伤建模研究中,对损伤位置信息的提取主要依赖脑的形态学分区。但这种方法存在的缺陷是脑的形态学分区与功能分区并不存在严格的对应关系。本研究以新近出现的基于体素水平的脑损伤与行为关联分析(voxel-based lesion-symptom mapping,VLSM))为基础,
通过脑电分析来给予脑死亡诊断一个更为确切的定义，对于减少风险和防止误诊是具有十分重要的意义的。从医院中采集的脑电数据允许我们进一步去研究这种动力学系统中的时间序列复杂性。在此文中，我们首先来探讨几种对于熵的可计算方法来评估昏迷和脑死病人，如近似熵、样本熵和以此为基础的多尺度和多变量的扩展；然后我们在现有的多变量多尺度方法基础上进一步扩展至动态特性，即通过实时的动态多变量多尺度熵的方法来观测病人的症
The experiment results show that tetraethylammonium and tetrodotoxin can make potassium or sodium ion channels poisoned, the potential mechanism is that conductance and active channel number are chang
An endogenous electrical field effect, i.e., ephaptic transmission, occurs when an electric field associated with activity occurring in one neuron polarizes the membrane of another neuron.
In a minimal model when glycolytic oscillations are coupled to electrical bursting in pancreatic islets, generation mechanism of different compound bursting patterns, with or without different deserts
This study investigated whether the directional index of neural information flow (NIF) could be used to characterize the synaptic plasticity, and assessed which oscillatory rhythm was associated with
The effects of noise on patterns and collective phenomena are studied in a small-world neuronal network with dynamics of each neuron described by a two-dimensional (2D) Rulkov map neuron.
目的 本研究旨在列用Anybody平台研究冷水刺激对食指灵活性的影响。方法 根据已有实验,获得食指弯曲运动参数,利用Anybody构建手部部握拳运动学模型,并进一步构建了包含两根外屈肌(FDS： flexor digitorum superficialis和FDP： flexor digitorum profundus)的骨骼肌肉模型,通过逆向动力学分析,主要考察了受冷水刺激前后手部握拳运动的变化
听觉稳态反应(auditory steady-state response,ASSR)是近年来才发展起来的一种新的客观听力检测技术,因其快速,无创,良好频率特异性,与行为听阈相关性好等优点,在临床上具有很好的应用前景。听觉稳态反应信号非常微弱,ASSR信号中叠加有其他电生理信号如背景脑电、面部,头皮颈部的肌电等,强噪声环境下 ASSR的提取显得尤为关键。随机共振(stochastic resona