Random pulse induced synchronization and resonance in uncoupled non-identical neuron models
Random pulse induced synchronization and resonance in uncoupled non-identical neuron models
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DOI：
10.1007/s11571-018-09518-5
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发表时间：
2019-06-01
影响因子：
3.7
通讯作者：
Tateno, Katsumi
中科院分区：
文献类型：
--
作者：
Nakamura, Osamu;Tateno, Katsumi
随机脉冲有助于神经元模型中的随机共振，而常见的随机脉冲导致非耦合神经元模型中的随机同步激励。研究了非耦合非全同Hodgkin-Huxley型神经元模型中由弱公共随机脉冲诱导的相位同步和随机共振现象。从伽玛分布中选取公共随机脉冲，其同步程度取决于相应的形状参数。具体而言，弱随机脉冲的低形状参数在非耦合神经元模型中诱导良好同步的尖峰，而弱随机脉冲或弱周期性脉冲的高形状参数引起低程度的同步。这些改善了并发输入的周期性和随机脉冲与高形状参数。最后，输出脉冲与周期脉冲同步，共同的随机脉冲揭示了本神经元模型中的周期响应。
Random pulses contribute to stochastic resonance in neuron models, whereas common random pulses cause stochastic-synchronized excitation in uncoupled neuron models. We studied concurrent phenomena contributing to phase synchronization and stochastic resonance following induction by a weak common random pulse in uncoupled non-identical Hodgkin-Huxley type neuron models. The common random pulse was selected from a gamma distribution and the degree of synchronization depended on the corresponding shape parameter. Specifically, a low shape parameter of the weak random pulse induced well-synchronized spiking in uncoupled neuron models, whereas a high shape parameter of the weak random pulse or a weak periodic pulse caused low degrees of synchronization. These were improved by concurrent inputs of periodic and random pulses with high shape parameters. Finally, the output pulse was synchronized with the periodic pulse, and the common random pulse revealed periodic responses in the present neuron models.