论文标题
神经回路的频率选择性具有异质传播延迟
Frequency selectivity of neural circuits with heterogeneous transmission delays
论文作者
论文摘要
神经元通过轴突和树突连接到其他具有有限速度的信号的神经元，从而导致神经元的触发与所得脉冲到其他神经元之间的延迟。由于延迟极大地使模型的分析治疗和解释复杂化，因此它们通常被忽视或被视为统一，从而导致缺乏理解神经系统延迟的影响。本文表明，异质的传播延迟使小组神经元对频谱不同的输入有选择性响应。通过研究接收相关时间移度输入的单个集成和传火神经元，可以显示频率响应如何与传入连接的强度和延迟时间相关联。结果表明，结合延迟会改变神经网络的功能，并改变神经连接和突触强度的影响。
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 paper 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.
