物理学报2012，Vol.61Issue(3)：501-509,9.
热敏神经元网络中螺旋波死亡和破裂的数值模拟
Numerical study of the death and breakup of spiral wave in the networks of thermosensitive neurons
摘要
Abstract
The experimential evidences confirm that spiral waves are observed in the disinhibited mammalian neocortex.The scheme of cellular networks is used to simulate the formation and the evolution of spiral wave in the neocortical slices.The regular networks of neurons are constructed in the two-dimensional space,the dynamical properties of thermosensitive neurons is described by temperature factor,and the effect of membrane temperature on the evolution of spiral wave is investigated in detail.A statistical factor of synchronization is defined to measure the critical condition inducing phase transition of spiral wave（death or breakup） by the factor of temperature of membrane.It is confirmed that spiral wave is removed and the whole networks become homogeneous and synchronous completely when the membrane temperature exceeds a certain threshold;the breakup of spiral wave is induced in the presence of weak channel noise being considered.Furthermore,it is suggested that the mechanism of temporary heat stupor could be the blocking of spiral wave propagation in some functional domain.关键词
螺旋波/热敏神经元/同步因子/破裂Key words
spiral wave/thermosensitive neuron/factor of synchronization/breakup分类
生物科学引用本文复制引用
马军,谢振博,陈江星..热敏神经元网络中螺旋波死亡和破裂的数值模拟[J].物理学报,2012,61(3):501-509,9.基金项目
国家自然科学基金 （）
甘肃省教育厅研究生导师基金（批准号：1010ZTC088）资助的课题 （）
