中国物理B ›› 2009, Vol. 18 ›› Issue (3): 872-880.doi: 10.1088/1674-1056/18/3/005
陆启韶1, 吕淑娟1, 郎秀锋1, 王宝华2
Wang Bao-Hua(王宝华)a)b), Lu Qi-Shao(陆启韶)a)†, Lü Shu-Juan(吕淑娟)a), and Lang Xiu-Feng(郎秀锋)a)
摘要: Spatiotemporal multiple coherence resonances for calcium activities induced by weak Gaussian white noise in coupled hepatocytes are studied. It is shown that bi-resonances in hepatocytes are induced by the interplay and competition between noise and coupling of cells, in other words, the cell in network can be excited either by noise or by its neighbour via gap junction which can transfer calcium ions between cells. Furthermore, the intercellular annular calcium waves induced by noise are observed, in which the wave length decreases with noise intensity augmenting but increases monotonically with coupling strength increasing. And for a fixed noise level, there is an optimal coupling strength that makes the coherence resonance reach maximum.
中图分类号: (Spatiotemporal pattern formation in cellular populations)