Neurons are connected to other neurons by axons and dendrites that conduct signals with finite velocities, resulting in delays between the firing of a neuron and the arrival of the resultant impulse at other neurons. Since delays greatly complicate the analytical treatment and interpretation of models, they are usually neglected or taken to be uniform, leading to a lack in the comprehension of the effects of delays in neural systems. This letter shows that heterogeneous transmission delays make small groups of neurons respond selectively to inputs with differing frequency spectra. By studying a single integrate-and-fire neuron receiving correlated time-shifted inputs, it is shown how the frequency response is linked to both the strengths and delay times of the afferent connections. The results show that incorporating delays alters the functioning of neural networks, and changes the effect that neural connections and synaptic strengths have.

中文翻译：

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具有异构离散传输延迟的神经电路的频率选择性。

神经元通过轴突和树突与其他神经元相连，这些轴突和树突以有限的速度传导信号，从而导致神经元放电和由此产生的脉冲到达其他神经元之间出现延迟。由于延迟极大地使模型的分析处理和解释复杂化，它们通常被忽略或被认为是统一的，导致对神经系统延迟的影响缺乏理解。这封信表明异构传输延迟使小群神经元选择性地响应具有不同频谱的输入。通过研究接收相关时移输入的单个整合和发射神经元，可以看出频率响应如何与传入连接的强度和延迟时间相关联。