# Command: hh_cond_exp_traub

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Name:

    hh_cond_exp_traub - Hodgin Huxley based model, Traub modified.

Description:

      hh_cond_exp_traub is an implementation of a modified Hodkin-Huxley model

      (1) Post-synaptic currents
      Incoming spike events induce a post-synaptic change of conductance modeled
      by an exponential function. The exponential function is normalized such that an
      event of weight 1.0 results in a peak current of 1 nS.

      (2) Spike Detection
      Spike detection is done by a combined threshold-and-local-maximum search: if
      there is a local maximum above a certain threshold of the membrane potential,
      it is considered a spike.

      Problems/Todo:
      Only the channel variables m,h,n are implemented. The original
      contains variables called y,s,r,q and \chi.

Parameters:

      The following parameters can be set in the status dictionary.

      V_m	 double	- Membrane potential in mV
      V_T	 double	- Voltage offset that controls dynamics. For default
      parameters, V_T = -63mV results in a threshold around
      -50mV.
      E_L	 double	- Leak reversal potential in mV.
      C_m	 double	- Capacity of the membrane in pF.
      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.
      t_ref	 double	- Duration of refractory period in ms.
      E_ex	 double	- Excitatory synaptic reversal potential in mV.
      E_in	 double	- Inhibitory synaptic reversal potential in mV.
      E_Na	 double	- Sodium reversal potential in mV.
      g_Na	 double	- Sodium peak conductance in nS.
      E_K	 double	- Potassium reversal potential in mV.
      g_K	 double	- Potassium peak conductance in nS.
      I_e	 double	- External input current in pA.

Require:

    HAVE_GSL

Receives:

    SpikeEvent, CurrentEvent, DataLoggingRequest

Sends:

    SpikeEvent

References:

      Traub, R.D. and Miles, R. (1991) Neuronal Networks of the Hippocampus.
      Cambridge University Press, Cambridge UK.

Author:

    Schrader

SeeAlso:

- hh_psc_alpha

Source:

    /opt/conda/conda-bld/nest_1510212701067/work/nest-2.14.0/models/hh_cond_exp_traub.h

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