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arXiv 0801.4461cond-mat.dis-nnq-bio.NC
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具有连续吸引子的神经网络动力学

Dynamics of Neural Networks with Continuous Attractors

C. C. Alan Fung, K. Y. Michael Wong, Si Wu

摘要:

我们研究了连续吸引子神经网络(CANNs)的动力学。由于其神经元相互作用的平移不变性,CANN可以保持连续的稳态家族。我们系统地探讨了它们的中性稳定性如何促进CANN的跟踪性能,CANN被认为在大脑功能中具有广泛的应用。我们开发了一种微扰的方法,利用占主导地位的运动在状态空间中的网络稳态。我们量化的凹凸形状在跟踪过程中的失真,并研究其对跟踪性能的影响。结果得到的最大速度为移动刺激可跟踪,和反应时间赶上突然变化的刺激。

英文摘要:

We investigate the dynamics of continuous attractor neural networks (CANNs). Due to the translational invariance of their neuronal interactions, CANNs can hold a continuous family of stationary states. We systematically explore how their neutral stability facilitates the tracking performance of a CANN, which is believed to have wide applications in brain functions. We develop a perturbative approach that utilizes the dominant movement of the network stationary states in the state space. We quantify the distortions of the bump shape during tracking, and study their effects on the tracking performance. Results are obtained on the maximum speed for a moving stimulus to be trackable, and the reaction time to catch up an abrupt change in stimulus.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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