STDPConnection.h

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/* 
* Copyright 2014-2018 Friedemann Zenke
*
* This file is part of Auryn, a simulation package for plastic
* spiking neural networks.
* 
* Auryn is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* 
* Auryn is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
* 
* You should have received a copy of the GNU General Public License
* along with Auryn.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef STDPCONNECTION_H_
#define STDPCONNECTION_H_

#include "auryn_definitions.h"
#include "AurynVector.h"
#include "DuplexConnection.h"
#include "Trace.h"
#include "LinearTrace.h"
#include "SpikeDelay.h"


namespace auryn {


class STDPConnection : public DuplexConnection
{

private:
        void init(AurynFloat eta, AurynFloat tau_pre, AurynFloat tau_post, AurynFloat maxweight);

protected:

        AurynDouble hom_fudge;

        Trace * tr_pre;
        Trace * tr_post;

        void propagate_forward();
        void propagate_backward();

        AurynWeight on_pre(NeuronID post);
        AurynWeight on_post(NeuronID pre);

public:
        AurynFloat A; 
        AurynFloat B; 
        bool stdp_active;

        STDPConnection(SpikingGroup * source, NeuronGroup * destination, 
                        TransmitterType transmitter=GLUT);

        STDPConnection(SpikingGroup * source, NeuronGroup * destination, 
                        const char * filename, 
                        AurynFloat eta=1, 
                        AurynFloat tau_pre=20e-3,
                        AurynFloat tau_post=20e-3,
                        AurynFloat maxweight=1. , 
                        TransmitterType transmitter=GLUT);

        STDPConnection(SpikingGroup * source, NeuronGroup * destination, 
                        AurynWeight weight, AurynFloat sparseness=0.05, 
                        AurynFloat eta=1, 
                        AurynFloat tau_pre=20e-3,
                        AurynFloat tau_post=20e-3,
                        AurynFloat maxweight=1. , 
                        TransmitterType transmitter=GLUT,
                        string name = "STDPConnection" );


        virtual ~STDPConnection();
        virtual void finalize();
        void free();

        virtual void propagate();
        virtual void evolve();

};

}

#endif /*STDPCONNECTION_H_*/