# Command: iaf_cond_exp_sfa_rr

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Name:

    iaf_cond_exp_sfa_rr - Simple conductance based leaky integrate-and-fire
      neuron model.

Description:

      iaf_cond_exp_sfa_rr is an iaf_cond_exp_sfa_rr i.e. an implementation of a
      spiking neuron using IAF dynamics with conductance-based synapses,
      with additional spike-frequency adaptation and relative refractory
      mechanisms as described in Dayan+Abbott, 2001, page 166.

      As for the iaf_cond_exp_sfa_rr, Incoming spike events induce a post-synaptic
      change  of  conductance  modelled  by an  exponential  function.  The
      exponential function is  normalised such that an event  of weight 1.0
      results in a peak current of 1 nS.

      Outgoing spike events induce a change of the adaptation and relative
      refractory conductances by q_sfa and q_rr, respectively.  Otherwise
      these conductances decay exponentially with time constants tau_sfa
      and tau_rr, respectively.

Parameters:

      The following parameters can be set in the status dictionary.

      V_m	 double	- Membrane potential in mV
      E_L	 double	- Leak reversal potential in mV.
      C_m	 double	- Capacity of the membrane in pF
      t_ref	 double	- Duration of refractory period in ms.
      V_th	 double	- Spike threshold in mV.
      V_reset   double	- Reset potential of the membrane in mV.
      E_ex	 double	- Excitatory reversal potential in mV.
      E_in	 double	- Inhibitory reversal potential in mV.
      g_L	 double	- Leak conductance in nS;
      tau_syn_ex double	- Time constant of the excitatory synaptic exponential
      function in ms.
      tau_syn_in double	- Time constant of the inhibitory synaptic exponential
      function in ms.
      q_sfa	 double	- Outgoing spike activated quantal spike-frequency adaptation
      conductance increase in nS.
      q_rr	 double	- Outgoing spike activated quantal relative refractory
      conductance increase in nS.
      tau_sfa   double	- Time constant of spike-frequency adaptation in ms.
      tau_rr	 double	- Time constant of the relative refractory mechanism in ms.
      E_sfa	 double	- spike-frequency adaptation conductance reversal potential in
      mV.
      E_rr	 double	- relative refractory mechanism conductance reversal potential
      in mV.
      I_e	 double	- an external stimulus current in pA.

Require:

    HAVE_GSL

Receives:

    SpikeEvent, CurrentEvent, DataLoggingRequest

Sends:

    SpikeEvent

References:

      Meffin, H., Burkitt, A. N., & Grayden, D. B. (2004). An analytical
      model for the large, fluctuating synaptic conductance state typical of
      neocortical neurons in vivo. J.  Comput. Neurosci., 16, 159-175.

      Dayan, P. and Abbott, L. F. (2001). Theoretical Neuroscience, MIT Press (p166)

Author:

    Sven Schrader, Eilif Muller

SeeAlso:

- iaf_cond_exp_sfa_rr
- aeif_cond_alpha
- iaf_psc_delta
- iaf_psc_exp
- iaf_cond_alpha

Source:

    /opt/conda/conda-bld/nest_1524088722951/work/nest-2.14.0/models/iaf_cond_exp_sfa_rr.h

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