Suprathreshold stochastic resonance induced by ion channel fluctuation
Suprathreshold stochastic resonance induced by ion channel fluctuation
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DOI：
10.1016/j.physd.2009.12.002
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发表时间：
2010-03-15
影响因子：
4
通讯作者：
Kubo, Masayoshi
中科院分区：
文献类型：
--
作者：
Ashida, Go;Kubo, Masayoshi
在这项研究中，我们检查了具有内在通道波动的神经元阵列的信号检测能力。数值模拟表明，如果存在适量的通道噪声，则从神经元阵列的输出尖峰活动估计输入信号是最准确的。相互信息和费舍尔信息的理论计算证实了阵列中噪声辅助信息传输的效果，或阈上随机共振的存在。这些结果表明，引起响应变异的通道噪声可能在群体编码中发挥重要作用。 (C) 2009 Elsevier B.V. 保留所有权利。
In this study, we examine the signal detection ability of an array of neurons with intrinsic channel fluctuation. Numerical simulations show that estimation of the input signal from the output spiking activity of the neuronal array is most accurate if a proper amount of channel noise exists. Theoretical calculation of the mutual and Fisher information confirms the effect of the noise-aided information transfer in the array, or the presence of suprathreshold stochastic resonance. These results indicate that the channel noise, which induces response variability, may play an essential role in population coding. (C) 2009 Elsevier B.V. All rights reserved.