瞬时神经元反应的内在时间尺度
The Intrinsic Time Scale of Transient Neuronal Responses
摘要:
在一个通用的神经元模型中,我们提出的线性响应理论的放电率响应于时间依赖的输入电流和噪声幅度。在这两种情况下,信号传输对于高于静止发射率的频率都被强烈衰减。对于高频率,平均输入和噪声传递函数均衰减为ω^{-2},与模型细节无关。我们的研究结果表明,以前建议的机制,近瞬时的信息传输是不一致的尖峰产生机制的真实神经元。
英文摘要:
In a generic neuron model, we present the linear response theory for the firing rate in response to both time dependent input currents and noise amplitudes. In both cases the signal transmission is strongly attenuated for frequencies above the stationary firing rate. For high frequencies both the mean input and the noise transmission function decay as ω^{-2}, independent of model details. Our results indicate that previously suggested mechanisms for near instantaneous transmission of information are not consistent with the spike generation mechanism of real neurons.
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