# Command: sli_neuron

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Name:

    sli_neuron - neuron with SLI callback

Description:

      The sli_neuron is a model whose state, update and calibration can be
      defined in SLI.

      The state of the neuron is a SLI dictionary which can be retrieved
      with GetStatus. The state should contain two procedures:
      1. /update
      2. /calibrate

      /calibrate is called before the simulation starts. It is used to
      pre-compute constants of the dynamics and to scale
      parameters to the temporal resolution.  A minimal
      implementation of calibrate is:

      /calibrate { GetResolution /h Set } def

      /update   is called during simulation and must propagate the node's
      state by one integration step h.  If /update decides that
      the node should spike, it must set the variable /spike to
      true.

      Both /calibrate and /update are called with the node's status
      dictionary on top of the dictionary stack.  This means that node
      variables override names in the systemdict or in the userdict.
      Moreover, all definitions are done in the node's statusdict and
      persist throughout the simulation.

      Errors.
      If an error occurs during the evaluation of /calibrate or /update, the
      errorneous neuron is skipped and update proceeds to the next node
      until the time-slice is finished. After the time-slice is finished,
      simulation terminates with an additional error message that issues the
      global id of the errorneous node.

      Errors are handled by the SLI standard errorhandler. In addition, the
      contents of the error dictionary is copied into the node's status
      dictionary, to allow debugging of the node.

Parameters:

Receives:

    SpikeEvent, CurrentEvent, DataLoggingRequest

Sends:

    SpikeEvent

Author:

    Diesmann, Plesser, Gewaltig

FirstVersion:

    January 2009

SeeAlso:

- iaf_psc_delta
- iaf_psc_exp
- iaf_cond_exp
- testsuite::test_sli_neuron

Source:

    /opt/conda/conda-bld/nest_1512421404550/work/nest-2.12.0/nest/sli_neuron.h

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