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Large Developing Receptive Fields Using a Distributed and Locally Reprogrammable Address–Event Receiver

机译:使用分布式的和本地可重新编程的地址事件接收器来开发较大的接收域

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A distributed and locally reprogrammable address–event receiver has been designed, in which incoming address–events are monitored simultaneously by all synapses, allowing for arbitrarily large axonal fan-out without reducing channel capacity. Synapses can change the address of their presynaptic neuron, allowing the distributed implementation of a biologically realistic learning rule, with both synapse formation and elimination (synaptic rewiring). Probabilistic synapse formation leads to topographic map development, made possible by a cross-chip current-mode calculation of Euclidean distance. As well as synaptic plasticity in rewiring, synapses change weights using a competitive Hebbian learning rule (spike-timing-dependent plasticity). The weight plasticity allows receptive fields to be modified based on spatio–temporal correlations in the inputs, and the rewiring plasticity allows these modifications to become embedded in the network topology.
机译:设计了一个分布式的,本地可重编程的地址事件接收器,其中所有突触同时监视传入的地址事件,从而允许任意大的轴突扇出,而不会减少通道容量。突触可以改变其突触前神经元的地址,从而允许以生物学方式实现现实的学习规则,同时形成和消除突触(重新连接突触)。概率突触的形成导致地形图的发展,这是通过欧几里德距离的跨芯片电流模式计算实现的。除了重新布线中的突触可塑性外,突触还使用竞争性的Hebbian学习规则(取决于尖峰时间的可塑性)来改变权重。权重可塑性允许根据输入中的时空相关来修改接收域,而重新布线的可塑性使这些修改可以嵌入网络拓扑中。

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