Spatiotemporal dynamics in a network composed of neurons with different excitabilities and excitatory coupling

被引：0
作者：
WeiWei Xiao
HuaGuang Gu
MingRui Liu
机构：
[1] Tongji University,School of Aerospace Engineering and Applied Mechanics
[2] Shanghai Jiao Tong University,Department of Mathematics
来源：
Science China Technological Sciences | 2016年 / 59卷
关键词：
spiral wave; neuronal network; spatiotemporal dynamics; type I excitability; type II excitability; coherence resonance;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Spiral waves have been observed in the biological experiments on rat cortex perfused with drugs which can block inhibitory synapse and switch neuron excitability from type II to type I. To simulate the spiral waves observed in the experiment, the spatiotemporal patterns are investigated in a network composed of neurons with type I and II excitabilities and excitatory coupling. Spiral waves emerge when the percentage (p) of neurons with type I excitability in the network is at middle levels, which is dependent on the coupling strength. Compared with other spatial patterns which appear at different p values, spiral waves exhibit optimal spatial correlation at a certain spatial frequency, implying the occurrence of spatial coherence resonance-like phenomenon. Some dynamical characteristics of the network such as mean firing frequency and synchronous degree can be well interpreted with distinct properties between type I excitability and type II excitability. The results not only identify dynamics of spiral waves in neuronal networks composed of neurons with different excitabilities, but also are helpful to understanding the emergence of spiral waves observed in the biological experiment.
引用
收藏
页码：1943 / 1952
页数：9
相关论文
共 137 条
[1]  
Gorelova N A(1983)Spiral waves of spreading depression in the isolated chicken retina J Neurobiol 14 353-363
[2]  
Bureš J(1992)Stationary and drifting spiral waves of excitation in isolated cardiac muscle Nature 355 349-351
[3]  
Salomonsz R(1997)Visual stimuli induce waves of electrical activity in turtle cortex Proc Natl Acad Sci U S A 94 7621-7626
[4]  
Pertsov A V(1991)Interhemispheric synchronization of oscillatory neuronal responses in cat visual cortex Science 252 1177-1179
[5]  
Davidenko J M(1995)Synchronization of neuronal activity in hippocampus by individual GABAergic interneurons Nature 378 75-78
[6]  
Prechtl J C(2010)Neural synchrony and the development of cortical networks Trends Cogn Sci 14 72-80
[7]  
Cohen L B(2004)Spiral waves in disinhibited mammalian neocortex J Neurosci 24 9897-9902
[8]  
Pesaran B(2007)Dynamical evolution of spatiotemporal patterns in mammalian middle cortex Phys Rev Lett 98 178102-990
[9]  
Engel A K(2010)Spiral wave dynamics in neocortex Neuron 68 978-780
[10]  
König P(2003)Rotors and spiral waves in atrial fibrillation J Cardiovasc Electrophysiol 14 776-2653
12345678910