Kitajima Hiroyuki, Kurths Jürgen
Faculty of Engineering, Kagawa University, 2217-20 Hayashi, Takamatsu, Kagawa 761-0396, Japan.
Chaos. 2005 Jun;15(2):23704. doi: 10.1063/1.1929687.
We investigate the influence of noise on synchronization between the spiking activities of neurons with external impulsive forces. We first analyze the dependence of the synchronized firing on the amplitude and the angular frequency of the impulsive force in the noise-free system. Three cases (regular spiking, traveling wave, and chaotic spiking) with low synchronized firing are chosen to study effects due to noise. In each case we find that small noise can be a promoter of synchronization phenomena in neural activities, by choosing an appropriate noise intensity acting on some of the neurons.
我们研究了噪声对具有外部脉冲力的神经元放电活动同步性的影响。我们首先分析了无噪声系统中同步放电对脉冲力幅度和角频率的依赖性。选择了三种同步放电率较低的情况（规则放电、行波和混沌放电）来研究噪声的影响。在每种情况下，我们都发现，通过选择作用于某些神经元的适当噪声强度，小噪声可以促进神经活动中的同步现象。
