Parmananda P, Escalera Santos Gerardo J, Rivera M, Showalter Kenneth
Facultad de Ciencias, UAEM, Colonia Chamilpa, Cuernavaca, Morelos, Mexico.
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Mar;71(3 Pt 1):031110. doi: 10.1103/PhysRevE.71.031110. Epub 2005 Mar 23.
Aperiodic stochastic resonance in an electrochemical system with excitable dynamics is characterized in experiments and simulations. Two different spike trains, one with stochastic and the other with chaotic interspike intervals, are imposed on the system as subthreshold aperiodic signals. Information transmission is quantified by the cross correlation between the subthreshold input signal and the noise induced system response. A maximum is exhibited in the input-output correlation as a function of the noise amplitude. Numerical simulations with an electrochemical model are in excellent agreement with the experimental observations.
在具有可激发动力学的电化学系统中，对非周期随机共振进行了实验和模拟表征。将两种不同的脉冲序列（一种具有随机的，另一种具有混沌的脉冲间隔）作为阈下非周期信号施加于该系统。通过阈下输入信号与噪声诱导的系统响应之间的互相关来量化信息传输。输入-输出相关性随噪声幅度呈现出最大值。使用电化学模型进行的数值模拟与实验观测结果高度吻合。
