Representation of input structure in synaptic weights by spike-timing-dependent plasticity
Matthieu Gilson, Anthony N Burkitt, David B Grayden, Doreen A Thomas, J Leo van Hemmen
Physical Review E | AMER PHYSICAL SOC | Published : 2010
Spike-timing-dependent plasticity (STDP) has been shown to generate a synaptic weight structure that is determined by the timing of the pre- and postsynaptic spikes at the synapse. In this paper it is shown under what conditions a neuron stimulated by several pools of delta-correlated inputs encodes this input structure in its resulting weight structure. The analysis is carried out using Poisson neurons with weight-dependent STDP. The learning dynamics induced by STDP leads to both stabilization of the input weights and competition between the weights for a broad range of learning parameters. The results demonstrate how weight-dependent STDP can generate multimodal stable asymptotic distribu..View full abstract
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Awarded by Australian Research Council (ARC)
The authors are grateful to Mark van Rossum and Tomoki Fukai for critical reading of an earlier version of the manuscript. M. G. was funded the University of Melbourne and NICTA. L.v.H. is partially supported by the BCCN-Munich. Funding is acknowledged from the Australian Research Council (ARC Discovery Projects No. DP0771815 and No. DP1096699). The Bionic Ear Institute acknowledges the support it receives from the Victorian Government through its Operational Infrastructure Support Program.