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Homeostatic Development of Dynamic Neural Fields

Claudius Gläser, Frank Joublin, Christian Goerick, "Homeostatic Development of Dynamic Neural Fields", Proceedings of the IEEE 7th International Conference on Development and Learning (ICDL), pp. 121-126, 2008.

Abstract

Dynamic neural field theory has become a popular technique for modeling the spatio-temporal evolution of activity within the cortex. When using neural fields the right balance between excitation and inhibition within the field is crucial for a stable operation. Finding this balance is a severe problem, particularly in face of experience-driven changes of synaptic strengths. Homeostatic plasticity where the objective function for each unit is to reach some target firing rate seems to counteract this problem. Here we present a recurrent neural network model composed of excitatory and inhibitory units which can self-organize via a learning regime incorporating Hebbian plasticity, homeostatic synaptic scaling, and self-regulatory changes in the intrinsic excitability of neurons. Furthermore, we do not define a neural field topology by a fixed lateral connectivity, rather lateral connections are learned as well.



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