Combined STDP and structural plasticity synapse model with multiple synaptic contacts, that creates a new synapse model called stdp_structpl_synapse_hom.
The connector stdp_structpl_synapse_hom can create synapses with spike time dependent plasticity as defined in [1, 2]. Each synapse (connection) of this model consists of several (n_pot_conns) synaptic contacts. If the weight of a contact drops below 0 the contact is deleted. Deleted contacts are recreated randomly with a constant rate.
[1] Moritz Deger, Alexander Seeholzer, Wulfram Gerstner - Multi-contact synapses for stable networks: a spike-timing dependent model of dendritic spine plasticity and turnover. Preprint arXiv:1609.05730 [q-bio.NC] https://arxiv.org/abs/1609.05730
[2] Moritz Deger, Alexander Seeholzer, Wulfram Gerstner - Multicontact Co-Operativity in Spike-Timing–Dependent Structural Plasticity Stabilizes Networks. Cerebral Cortex 28, no. 4 (April 1, 2018): 1396–1415. https://doi.org/10.1093/cercor/bhx339.
This module requires NEST and Python bindings. Make sure to run source nest-install-dir/bin/nest-vars.sh before, to properly set the environment variable NEST_INSTALL_DIR used below.
git clone https://github.com/flinz/nest-module-STDPStructplast
cd nest-module-STDPStructplast
mkdir build && cd build
cmake -Dwith-nest=${NEST_INSTALL_DIR}/bin/nest-config ..
make
make install
make test