Lévy noise improves the electrical activity in a neuron under electromagnetic radiation.
Lévy noise improves the electrical activity in a neuron under electromagnetic radiation.
复制标题
莱维噪声改善了电磁辐射下神经元的电活动
DOI：
10.1371/journal.pone.0174330
复制
发表时间：
2017
期刊：
影响因子：
3.7
通讯作者：
Ma J
中科院分区：
文献类型：
--
作者：
Wu J;Xu Y;Ma J
由于神经系统内生物电波动的多样性和复杂性，膜上磁通引起的外部电磁辐射可用L噪声的非高斯型分布来描述。因此，本文研究了改进的Hindmarsh-Rose模型在L噪声的外部电磁辐射激励下的电活动，并展示了一些有趣的电活动模式。L噪声的外部电磁辐射导致了电活动和空间位相的模变变，如从静止态到激发态，从尖峰态到尖峰较多的尖峰态，从尖峰态到爆发态。然后描绘了发射状态随L噪声强度变化的时间点。随着L噪声强度的增加，神经元的放电增加。并分析了不同强度、不同稳定性指数和不同偏斜度的L噪声对神经元膜电位的稳态概率分布函数。此外，通过正的最大李雅普诺夫指数，检测出L噪声分布的外部电磁辐射诱导的神经元混沌电模的参数区域。
As the fluctuations of the internal bioelectricity of nervous system is various and complex, the external electromagnetic radiation induced by magnet flux on membrane can be described by the non-Gaussian type distribution of Lévy noise. Thus, the electrical activities in an improved Hindmarsh-Rose model excited by the external electromagnetic radiation of Lévy noise are investigated and some interesting modes of the electrical activities are exhibited. The external electromagnetic radiation of Lévy noise leads to the mode transition of the electrical activities and spatial phase, such as from the rest state to the firing state, from the spiking state to the spiking state with more spikes, and from the spiking state to the bursting state. Then the time points of the firing state versus Lévy noise intensity are depicted. The increasing of Lévy noise intensity heightens the neuron firing. Also the stationary probability distribution functions of the membrane potential of the neuron induced by the external electromagnetic radiation of Lévy noise with different intensity, stability index and skewness papremeters are analyzed. Moreover, through the positive largest Lyapunov exponent, the parameter regions of chaotic electrical mode of the neuron induced by the external electromagnetic radiation of Lévy noise distribution are detected.