噪声在慢变系统中的随机Chay神经元模型的自共振

COHERENT RESONANCE IN THE STOCHASTIC CHAY NEURON MODEL IN SLOW DYNAMICS WITH WHITE NOISE

研究了白噪声在慢变系统中的Chay神经元模型的共振.被加到慢变量中的白噪声相当于钙离子的波动,这是更具有生理意义的.随着噪声强度的增加,发现在某一优化噪声水平处,信噪比经过极大值,这意味自共振的发生.同时,也证实了钙离子的波动可以引起信号的探察和转换.

Coherent resonance in the Chay neuron model with white noise in the slow dynamics was studied. The white noise that is added to the slow dynamics amounts to calcium ionic fluctuation. So it is more biologically feasible. We found that when increasing the noise intensity the output signal-to-noise(SNR) of the Chay neuron system went through a local maximum at the optimal noise level, which showed the occurrence of coherence resonance. We also verified that the noise in the slow dynamics , namely, the calcium ionic random fluctuation, may enhance signal detection and transduction.