PoissonInputNeuron.cpp

Go to the documentation of this file.

#include "PoissonInputNeuron.h"

ThreadSpecificRandomDistribution< ExponentialDistribution > PoissonInputNeuron::isi_gen;

PoissonInputNeuron::PoissonInputNeuron(double rate, double duration, double Tstart, double Trefract) 
        : rate(rate), Tstart(Tstart), duration(duration), Trefract(Trefract)
{       
}


PoissonInputNeuron::PoissonInputNeuron()
   : rate(5), Tstart(0), duration(1), Trefract(5e-3)
{       
}


PoissonInputNeuron::~PoissonInputNeuron()
{
}


int PoissonInputNeuron::reset(double dt)
{
        if (Trefract == 0)      
                Trefract = dt;
        isi_gen.set( ExponentialDistribution(rate) );
        nextSpikeTime = Tstart + isi_gen();
        endTime = Tstart + duration;
        active = true;  
        return 0;       
}

int PoissonInputNeuron::advance(AdvanceInfo const &ai)
{       
        if (active) { // we are in spiking mode
                if ((nextSpikeTime - ai.t.in_sec()) < ai.dt.in_sec() )
                {       
                        out_port.setSpike( ai, nextSpikeTime );
                        nextSpikeTime += isi_gen() + Trefract;                                          
                        if (nextSpikeTime > endTime) 
                                active = false;
                        return ADVANCEFLAG_HASSPIKED;
                }
                else                    
                        return 0;
        }
        return 0;
}

---