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Metastable dynamics in heterogeneous neural fields

机译:异构神经场中的亚稳态动力学

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摘要

We present numerical simulations of metastable states in heterogeneous neural fields that are connected along heteroclinic orbits. Such trajectories are possible representations of transient neural activity as observed, for example, in the electroencephalogram. Based on previous theoretical findings on learning algorithms for neural fields, we directly construct synaptic weight kernels from Lotka-Volterra neural population dynamics without supervised training approaches. We deliver a MATLAB neural field toolbox validated by two examples of one- and two-dimensional neural fields. We demonstrate trial-to-trial variability and distributed representations in our simulations which might therefore be regarded as a proof-of-concept for more advanced neural field models of metastable dynamics in neurophysiological data.
机译:我们提出了沿异斜轨道连接的异质神经场中亚稳态的数值模拟。这样的轨迹是例如在脑电图中观察到的瞬时神经活动的可能表示。基于先前关于神经场学习算法的理论发现,我们无需监督训练方法就可以从Lotka-Volterra神经种群动态直接构建突触权重核。我们提供了一个MATLAB神经场工具箱,该工具箱已通过一维和二维神经场的两个示例进行了验证。我们在模拟中演示了试验间的可变性和分布式表示,因此可以将其视为神经生理学数据中亚稳态动力学的更高级神经场模型的概念验证。

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