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- W2069821571 abstract "A novel depth-from-motion vision model based on leaky integrate-and-fire (I&F) neurons incorporates the implications of recent neurophysiological findings into an algorithm for object discovery and depth analysis. Pulse-coupled I&F neurons capture the edges in an optical flow field and the associated time of travel of those edges is encoded as the neuron parameters, mainly the time constant of the membrane potential and synaptic weight. Correlations between spikes and their timing thus code depth in the visual field. Neurons have multiple output synapses connecting to neighbouring neurons with an initial Gaussian weight distribution. A temporally asymmetric learning rule is used to adapt the synaptic weights online, during which competitive behaviour emerges between the different input synapses of a neuron. It is shown that the competition mechanism can further improve the model performance. After training, the weights of synapses sourced from a neuron do not display a Gaussian distribution, having adapted to encode features of the scenes to which they have been exposed." @default.
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- W2069821571 date "2006-06-01" @default.
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- W2069821571 title "AN ADAPTIVE VISUAL NEURONAL MODEL IMPLEMENTING COMPETITIVE, TEMPORALLY ASYMMETRIC HEBBIAN LEARNING" @default.
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- W2069821571 doi "https://doi.org/10.1142/s0129065706000573" @default.
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