Spike Timing-Dependent Plasticity in the Address Domain

Part of Advances in Neural Information Processing Systems 15 (NIPS 2002)

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R. Vogelstein, Francesco Tenore, Ralf Philipp, Miriam Adlerstein, David Goldberg, Gert Cauwenberghs


Address-event representation (AER), originally proposed as a means to communicate sparse neural events between neuromorphic chips, has proven efficient in implementing large-scale networks with arbitrary, configurable synaptic connectivity. In this work, we further extend the functionality of AER to implement arbitrary, configurable synaptic plas- ticity in the address domain. As proof of concept, we implement a bi- ologically inspired form of spike timing-dependent plasticity (STDP) based on relative timing of events in an AER framework. Experimen- tal results from an analog VLSI integrate-and-fire network demonstrate address domain learning in a task that requires neurons to group corre- lated inputs.