Command: quantal_stp_synapse

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Name:
quantal_stp_synapse - Probabilistic synapse model with short term
plasticity.
Description:
This synapse model implements synaptic short-term depression and
short-term facilitation according to the quantal release model
described by Fuhrmann et al. [1] and Loebel et al. [2].

Each presynaptic spike will stochastically activate a fraction of
the available release sites. This fraction is binomialy
distributed and the release probability per site is governed by the
Fuhrmann et al. (2002) model. The solution of the differential
equations is taken from Maass and Markram 2002 [3].

The connection weight is interpreted as the maximal weight that can
be obtained if all n release sites are activated.
Parameters:
The following parameters can be set in the status dictionary:
\verbatim embed:rst
========== ======= =========================================================
U real Maximal fraction of available resources [0,1],
default=0.5
u real Available fraction of resources [0,1], default=0.5
p real Probability that a vesicle is available, default = 1.0
n integer Total number of release sites, default = 1
a integer Number of available release sites, default = n
tau_rec ms Time constant for depression, default=800 ms
tau_rec ms Time constant for facilitation, default=0 (off)
========== ======= =========================================================
\endverbatim
Transmits:
SpikeEvent
References:
\verbatim embed:rst
.. [1] Fuhrmann G, Segev I, Markram H, Tsodyks MV (2002). Coding of
temporal information by activity-dependent synapses. Journal of
neurophysiology, 87(1):140-8.
DOI: https://doi.org/10.1152/jn.00258.2001
.. [2] Loebel A, Silberberg G, Helbig D, Markram H, Tsodyks MV, Richardson MJE
(2009). Multiquantal release underlies the distribution of synaptic
efficacies in the neocortex. Frontiers in Computational Neuroscience,
3, 27. DOI: https://doi.org/10.3389/neuro.10.027.2009
.. [3] Maass W, Markram H (2002). Synapses as dynamic memory buffers.
Neural Networks, 15(2):155-161.
DOI: https://doi.org/10.1016/S0893-6080(01)00144-7
\endverbatim
Author:
Marc-Oliver Gewaltig, based on tsodyks2_synapse
FirstVersion:
December 2013
SeeAlso:
Source:
/var/www/debian/nest/nest-simulator-2.18.0/models/quantal_stp_connection.h
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