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clopath_synapse – Synapse type for voltage-based STDP after Clopath

Description

clopath_synapse is a connector to create Clopath synapses as defined in 1. In contrast to usual STDP, the change of the synaptic weight does not only depend on the pre- and postsynaptic spike timing but also on the postsynaptic membrane potential.

Clopath synapses require archiving of continuous quantities. Therefore Clopath synapses can only be connected to neuron models that are capable of doing this archiving. So far, compatible models are aeif_psc_delta_clopath and hh_psc_alpha_clopath.

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_x	ms	Time constant of the trace of the presynaptic spike train
Wmax	real	Maximum allowed weight
Wmin	real	Minimum allowed weight

Other parameters like the amplitudes for long-term potentiation (LTP) and depression (LTD) are stored in in the neuron models that are compatible with the Clopath synapse.

Transmits

SpikeEvent

References

1

Clopath et al. (2010). Connectivity reflects coding: a model of voltage-based STDP with homeostasis. Nature Neuroscience 13:3, 344–352. DOI: https://doi.org/10.1038/nn.2479

2

Clopath and Gerstner (2010). Voltage and spike timing interact in STDP – a unified model. Frontiers in Synaptic Neuroscience 2:25. DOI: https://doi.org/10.3389/fnsyn.2010.00025

3

Voltage-based STDP synapse (Clopath et al. 2010) on ModelDB https://senselab.med.yale.edu/ModelDB/showmodel.cshtml?model=144566

See also

Synapse, Spike-Timing-Dependent Plasticity, Clopath Plasticity