Command: stdp_dopamine_synapse

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Name:
stdp_dopamine_synapse - Synapse type for dopamine-modulated
spike-timing dependent plasticity.
Examples:
/volume_transmitter Create /vol Set
/iaf_psc_alpha Create /pre_neuron Set
/iaf_psc_alpha Create /post_neuron Set
/iaf_psc_alpha Create /neuromod_neuron Set
/stdp_dopamine_synapse << /vt vol >> SetDefaults
neuromod_neuron vol Connect
pre_neuron post_neuron /stdp_dopamine_synapse Connect
Description:
stdp_dopamine_synapse is a connection to create synapses with
dopamine-modulated spike-timing dependent plasticity (used as a
benchmark model in [1], based on [2]). The dopaminergic signal is a
low-pass filtered version of the spike rate of a user-specific pool
of neurons. The spikes emitted by the pool of dopamine neurons are
delivered to the synapse via the assigned volume transmitter. The
dopaminergic dynamics is calculated in the synapse itself.
Parameters:
\verbatim embed:rst
========= ======= ======================================================
**Common properties**
-------------------------------------------------------------------------
vt integer ID of volume_transmitter collecting the spikes
from the pool of dopamine releasing neurons and
transmitting the spikes to the synapse. A value of
-1 indicates that no volume transmitter has been
assigned.
A_plus real Amplitude of weight change for facilitation
A_minus real Amplitude of weight change for depression
tau_plus ms STDP time constant for facilitation
tau_c ms Time constant of eligibility trace
tau_n ms Time constant of dopaminergic trace
b real Dopaminergic baseline concentration
Wmin real Minimal synaptic weight
Wmax real Maximal synaptic weight
========= ======= ======================================================

=== ====== =====================================
**Individual properties**
-------------------------------------------------
c real Eligibility trace
n real Neuromodulator concentration
=== ====== =====================================
\endverbatim
Transmits:
SpikeEvent
Remarks:
• based on an earlier version by Wiebke Potjans
• major changes to code after code revision in Apr 2013
References:
\verbatim embed:rst
.. [1] Potjans W, Morrison A, Diesmann M (2010). Enabling functional neural
circuit simulations with distributed computing of neuromodulated
plasticity. Frontiers in Computational Neuroscience, 4:141.
DOI: https://doi.org/10.3389/fncom.2010.00141
.. [2] Izhikevich EM (2007). Solving the distal reward problem through linkage
of STDP and dopamine signaling. Cerebral Cortex, 17(10):2443-2452.
DOI: https://doi.org/10.1093/cercor/bhl152
\endverbatim
Author:
Susanne Kunkel
SeeAlso:
Source:
/var/www/debian/nest/nest-simulator-2.18.0/models/stdp_dopa_connection.h
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