stdp_pl_synapse_hom – Synapse type for spike-timing dependent plasticity with power law
=======================================================================================

Description
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``stdp_pl_synapse`` is a connector to create synapses with spike time
dependent plasticity using homoegeneous parameters (as defined in [1]_).

Parameters
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=========  ======  ====================================================
 tau_plus  ms      Time constant of STDP window, potentiation
                   (tau_minus defined in postsynaptic neuron)
 lambda    real    Learning rate
 alpha     real    Asymmetry parameter (scales depressing increments as
                   alpha*lambda)
 mu        real    Weight dependence exponent, potentiation
=========  ======  ====================================================

The parameters can only be set by SetDefaults and apply to all synapses of
the model.

.. warning::

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

References
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.. [1] Morrison A, Aertsen A, Diesmann M. (2007) Spike-timing dependent
       plasticity in balanced random netrks. Neural Computation,
       19(6):1437-1467. DOI: https://doi.org/10.1162/neco.2007.19.6.1437

Transmits
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SpikeEvent

See also
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:doc:`Synapse <index_synapse>`, :doc:`Spike-Timing-Dependent Plasticity <index_spike-timing-dependent plasticity>`