Free-running period of neurons in the suprachiasmatic nucleus: Its dependence on the distribution of neuronal coupling strengths
Free-running period of neurons in the suprachiasmatic nucleus: Its dependence on the distribution of neuronal coupling strengths
复制标题
视交叉上核神经元的自由运行期：其对神经元耦合强度分布的依赖性
DOI：
10.1103/physreve.80.030904
复制
发表时间：
2009-09-01
影响因子：
2.4
通讯作者：
Liu, Zonghua
中科院分区：
文献类型：
--
作者：
Gu, Changgui;Wang, Jianxiong;Liu, Zonghua
视交叉上核（SCN）起搏点在不同种属动物中均表现出20 ~ 28 h的自由运行期，通常从耦合强度的角度来解释。基于SCN中耦合强度不相同的假设，我们发现了另一种机制，即耦合强度的分布也可以导致自由运行周期的多样性。自由运行周期与平均耦合强度成正比，与耦合色散成反比。此外，我们提出了一个解析相位模型来证实我们的发现，这表明了我们的发现的坚实基础，并打开了一个窗口，研究SCN振子的集体行为。
The suprachiasmatic nucleus (SCN) pacemaker shows a free-running period ranging from 20 to 28 h for different species, which was usually explained from the angle of coupling strength. Based on the assumption of nonidentical coupling strengths in SCN, we find an alternative mechanism that the diversity of free-running period can be also caused by the distribution of coupling strengths. The free-running period is proportional to the average coupling strength and inverse proportional to the dispersion of couplings. Moreover, we present an analytic phase model to confirm our finding, which shows a solid foundation of our finding and opens a window to study the collective behaviors of SCN oscillators.