tennsS v1.53 Reference Manual

Go to the previous, next section, table of contents.

_Spike

A simple thresholded spiking node with a <threshold> mechanism. The threshold object is constructed and must be of type Threshold. Multiple <trace> objects may be attached to calculate a variety of firing rate measures. Each trace object is constructed and must be of type Trace. The <value> of the node is equal to the time of last spike. If an object is referenced using <release>, then the release of the node is probabilistic. Calling the default operator for the release object returns the likelihood of release between [0,1]. robabilistic release requires that <unif> specifies a uniform distribution between [0,1]. The distribution is sampled by calling the default operator. The release and unif objects are referenced and must be of type Particle.

Naming
    trace/<id>     references trace <id>
    threshold      references threshold
    release        references release
    unif           references uniform pdf


Reverse References for Global Context
    owner          trace/<id>, threshold


Control
    trace/<id>     reset
    threshold      reset, dump, restore


Configuration
    potential=<data>
                   sets potential (0)
    absref=<data>  absolute refractory period (0.001)
    amplitude=<data>
                   sets amplitude of spike (1)
    memory=<bool>  sets memory flag (1)
    calculate=<bool>
                   forces calculation (0)
    last=<data>    time of last spike (-1.79769e+308)
    next=<data>    time of next spike (1.79769e+308)
    release=<ref>  release probability (none)
    unif=<ref>     pdf between [0,1] (none)


Source Points
    potential      membrane potential of node
    threshold      current threshold value
    last           last spike
    next           next spike


Trigger points
    fire           just after the neuron fires
    release        release probability


Commands
    trace [type=<id>] [id=<id>] [exists=<data>] [use=<id>] <configuration
      arguments to the trace>
        create a trace
            type=<id> the type of the trace 
            id=<id> the identifier the trace 
            exists=<data> try to use the first existing trace
              whose period matches <data>, otherwise create a new
              trace 
            use=<id> try to use the existing trace with the specified
              <id>, otherwise create a new trace; this overides
              the <exist> option 

    threshold type=<id> <configuration arguments to the threshold>
        create a threshold
            type=<id> the type of the threshold 

    init obj=<id> [period=<data>] [mode=interval|time|rate] [next=<bool>]
        initialise the past spike train for the node
            obj=<id> the source for spikes 
            period=<data> the duration of the spike train 
            mode=interval|time|rate how to interpret the data
              from the source 
            next=<bool> whether to set the time of the next future
              spike 

Derived Classes

• _Asynchin
• _Lisource
• _Spkevent
• _Spkfunc
• _Spkresp

Go to the previous, next section, table of contents. Document generated Mon Jun 16 02:19:05 GMT 2003