Liang Xiaoming, Dhamala Mukeshwar, Zhao Liang, Liu Zonghua
Department of Physics, Institute of Theoretical Physics, East China Normal University, Shanghai 200062, China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2010 Jul;82(1 Pt 1):010902. doi: 10.1103/PhysRevE.82.010902. Epub 2010 Jul 1.
It is well known that resonance can be induced by external noise or diversity. Here we show that resonance can be induced even by a phase disorder in coupled excitable neurons with subthreshold activity. In contrast to the case of identical phase, we find that phase disorder plays an active role in enhancing neuronal activity. We also uncover that the presence of phase disorder can induce a double resonance phenomenon: phase disorder and coupling strength both can enhance neuronal firing activity. A physical theory is formulated to help understand the mechanism behind this double resonance phenomenon.
众所周知，共振可由外部噪声或多样性诱发。在此我们表明，即使在具有阈下活动的耦合可兴奋神经元中存在相位无序，共振也能被诱发。与同相位的情况相反，我们发现相位无序在增强神经元活动方面发挥着积极作用。我们还发现相位无序的存在可诱发双共振现象：相位无序和耦合强度都能增强神经元的放电活动。我们构建了一个物理理论来帮助理解这种双共振现象背后的机制。
