离子通道噪声对神经元新陈代谢能量的影响

利用随机Hodgkin-Huxley模型对发生在不同膜面积、不同温度下的神经元新陈代谢能量损耗进行了数值模拟研究.与实际神经元进行比较,表明神经元细胞膜存在一个最佳的膜面积和最佳的温度. 在最佳的膜面积和温度下,神经元的新陈代谢能量损耗最小. 最佳的膜面积与实际神经元膜面积一致,并且这个最佳的温度与室温一致. 关键词： 噪声 离子通道 神经元 Hodgkin-Huxley模型     

Synchronization of spiral waves in a two-layer coupled inhomogeneous excitable system

We studied synchronization behaviours of spiral waves in a two-layer coupled inhomogeneous excitable system. It was found that phase synchronization can be observed under weak coupling strength. By increasing the coupling strength, the synchronization is broken down. With the further increase of the coupling strength, complete synchronization and phase synchronization occur again. We also found that the inhomogeneity in excitable systems is helpful to the synchronization.