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vogels_sprekeler_synapse – Synapse type for symmetric spike-timing dependent plasticity with constant depression

Description

vogels_sprekeler_synapse is a connector to create synapses with symmetric spike time dependent plasticity and constant depression (as defined in 1). The learning rule is symmetric, i.e., the synapse is strengthened irrespective of the order of the pre- and postsynaptic spikes. Each pre-synaptic spike also causes a constant depression of the synaptic weight which differentiates this rule from other classical stdp rules.

Warning

This synaptic plasticity rule does not take precise spike timing into account. When calculating the weight update, the precise spike time part of the timestamp is ignored.

Parameters

tau	ms	Time constant of STDP window, potentiation
Wmax	real	Maximum allowed weight
eta	real	Learning rate
alpha	real	Constant depression (= 2 * tau * target firing rate in 1)

Transmits

SpikeEvent

References

1(1,2)

Vogels et al. (2011). Inhibitory plasticity balances excitation and inhibition in sensory pathways and memory networks. Science, 334(6062):1569-1573. DOI: https://doi.org/10.1126/science.1211095