# Command: stdp_synapse_hom

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Name:

    stdp_synapse_hom - Synapse type for spike-timing dependent
      plasticity using homogeneous parameters.

Examples:

      multiplicative STDP [2]  mu_plus = mu_minus = 1.0
      additive STDP	 [3]  mu_plus = mu_minus = 0.0
      Guetig STDP	 [1]  mu_plus = mu_minus = [0.0,1.0]
      van Rossum STDP	 [4]  mu_plus = 0.0 mu_minus = 1.0

Description:

      stdp_synapse_hom is a connector to create synapses with spike time
      dependent plasticity (as defined in [1]). Here the weight dependence
      exponent can be set separately for potentiation and depression.

      Parameters controlling plasticity are identical for all synapses of the
      model, reducing the memory required per synapse considerably.

Parameters:

      tau_plus   double	- Time constant of STDP window, potentiation in ms
      (tau_minus defined in post-synaptic neuron)
      lambda	 double	- Step size
      alpha	 double	- Asymmetry parameter (scales depressing increments as
      alpha*lambda)
      mu_plus   double	- Weight dependence exponent, potentiation
      mu_minus   double	- Weight dependence exponent, depression
      Wmax	 double	- Maximum allowed weight

Transmits:

    SpikeEvent

Remarks:

      The parameters are common to all synapses of the model and must be set using
      SetDefaults on the synapse model.

References:

      [1] Guetig et al. (2003) Learning Input Correlations through Nonlinear
      Temporally Asymmetric Hebbian Plasticity. Journal of Neuroscience

      [2] Rubin, J., Lee, D. and Sompolinsky, H. (2001). Equilibrium
      properties of temporally asymmetric Hebbian plasticity, PRL
      86,364-367

      [3] Song, S., Miller, K. D. and Abbott, L. F. (2000). Competitive
      Hebbian learning through spike-timing-dependent synaptic
      plasticity,Nature Neuroscience 3:9,919--926

      [4] van Rossum, M. C. W., Bi, G-Q and Turrigiano, G. G. (2000).
      Stable Hebbian learning from spike timing-dependent
      plasticity, Journal of Neuroscience, 20:23,8812--8821

Author:

    Moritz Helias, Abigail Morrison

FirstVersion:

    March 2006

SeeAlso:

- synapsedict
- tsodyks_synapse
- static_synapse

Source:

    /opt/conda/conda-bld/nest_1512418852064/work/nest-2.12.0/models/stdp_connection_hom.h

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