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

Simeon Bamford, Alan Murray, D. J. Willshaw

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)286-304
Number of pages19
JournalIEEE Transactions on Neural Networks
Volume21
Issue number2
DOIs
Publication statusPublished - Feb 2010

Keywords

  • Address–event representation (AER)
  • Euclidean distance
  • neural network architecture
  • neural network hardware
  • neuromorphic very large scale integration (VLSI)
  • synapse elimination
  • synapse formation
  • synaptic rewiring
  • topographic map

Fingerprint Dive into the research topics of 'Large Developing Receptive Fields Using a Distributed and Locally Reprogrammable Address-Event Receiver'. Together they form a unique fingerprint.

Cite this