ABSConnection.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/>.
*
* If you are using Auryn or parts of it for your work please cite:
* Zenke, F. and Gerstner, W., 2014. Limits to high-speed simulations 
* of spiking neural networks using general-purpose computers. 
* Front Neuroinform 8, 76. doi: 10.3389/fninf.2014.00076
*/

#ifndef ABSCONNECTION_H_
#define ABSCONNECTION_H_

#define ABS_VOLTAGE_CURVE_SIZE 100
#define ABS_VOLTAGE_CURVE_MIN -80e-3
#define ABS_VOLTAGE_CURVE_MAX -40e-3

#include "auryn_definitions.h"
#include "AurynVector.h"
#include "DuplexConnection.h"
#include "EulerTrace.h"

namespace auryn {


class ABSConnection : public DuplexConnection
{

protected:
        AurynFloat tau_post;
        EulerTrace * tr_post;

        inline AurynWeight dw_fwd(NeuronID post);
        inline AurynWeight dw_bkw(NeuronID pre);
        virtual AurynFloat etamod(NeuronID post);

protected:

        void propagate_forward();
        void propagate_backward();


public:
        AurynFloat * voltage_curve_post;

        bool stdp_active;

        ABSConnection(SpikingGroup * source, NeuronGroup * destination, 
                        const char * filename, 
                        AurynWeight maxweight=1. , TransmitterType transmitter=GLUT);

        ABSConnection(SpikingGroup * source, NeuronGroup * destination, 
                        AurynWeight weight, AurynFloat sparseness=0.05,
                        AurynWeight maxweight=1. , TransmitterType transmitter=GLUT, std::string name="ABSConnection");
        virtual ~ABSConnection();
        void init(AurynWeight maxw);
        void free();

        void set_default_curve(double fp_low=-60e-3, double fp_middle=-55e-3, double fp_high=-50e-3, double scale=100);
        void load_curve_from_file( const char * filename , double scale = 1. );

        virtual void propagate();

};

}

#endif /*ABSCONNECTION_H_*/