IntFire Class Reference

#include <IntFire.h>

Collaboration diagram for IntFire:

Public Member Functions
void	activation (double v)
double	getRefractoryPeriod () const
double	getTau () const
double	getThresh () const
double	getVm () const
void	innerAddSpike (unsigned int synIndex, double time)
	IntFire ()
	IntFire (double thresh, double tau)
void	process (const Eref &e, ProcPtr p)
void	reinit (const Eref &e, ProcPtr p)
void	setRefractoryPeriod (double v)
void	setTau (double v)
void	setThresh (double v)
void	setVm (double v)

Static Public Member Functions
static const Cinfo *	initCinfo ()

Private Attributes
double	activation_
double	lastSpike_
double	refractoryPeriod_
double	tau_
double	thresh_
double	Vm_

Friends
void	testStandaloneIntFire ()
void	testSynapse ()

Detailed Description

Definition at line 14 of file IntFire.h.

Constructor & Destructor Documentation

IntFire::IntFire

(

)

Definition at line 103 of file IntFire.cpp.

    : Vm_( 0.0 ), thresh_( 0.0 ), tau_( 1.0 ),
        refractoryPeriod_( 0.1 ), lastSpike_( -0.1 ),
        activation_( 0.0 )
{
    ;
}

IntFire::IntFire	(	double	thresh,
		double	tau
	)

Definition at line 111 of file IntFire.cpp.

    : Vm_( 0.0 ), thresh_( thresh ), tau_( tau ), refractoryPeriod_( 0.1 ), lastSpike_( -1.0 ), activation_( 0.0 )
{
    ;
}

Member Function Documentation

void IntFire::activation

(

double

v

)

Definition at line 182 of file IntFire.cpp.

References activation_.

Referenced by initCinfo().

{
    activation_ += v;
}

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double IntFire::getRefractoryPeriod

(

)

const

Definition at line 177 of file IntFire.cpp.

References refractoryPeriod_.

Referenced by initCinfo().

{
    return refractoryPeriod_;
}

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double IntFire::getTau

(

)

const

Definition at line 167 of file IntFire.cpp.

References tau_.

Referenced by initCinfo().

{
    return tau_;
}

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double IntFire::getThresh

(

)

const

Definition at line 172 of file IntFire.cpp.

References thresh_.

Referenced by initCinfo().

{
    return thresh_;
}

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double IntFire::getVm

(

)

const

Definition at line 162 of file IntFire.cpp.

References Vm_.

Referenced by initCinfo().

{
    return Vm_;
}

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const Cinfo * IntFire::initCinfo ( )

static

Definition at line 23 of file IntFire.cpp.

References activation(), getRefractoryPeriod(), getTau(), getThresh(), getVm(), Neutral::initCinfo(), intFireCinfo, process(), reinit(), setRefractoryPeriod(), setTau(), setThresh(), setVm(), and spikeOut().

Referenced by testCinfoFields(), testFinfoFields(), testSendSpike(), testSetGetDouble(), and testSparseMsg().

{
        // Field Definitions
        static ValueFinfo< IntFire, double > Vm(
            "Vm",
            "Membrane potential",
            &IntFire::setVm,
            &IntFire::getVm
        );

        static ValueFinfo< IntFire, double > tau(
            "tau",
            "charging time-course",
            &IntFire::setTau,
            &IntFire::getTau
        );

        static ValueFinfo< IntFire, double > thresh(
            "thresh",
            "firing threshold",
            &IntFire::setThresh,
            &IntFire::getThresh
        );

        static ValueFinfo< IntFire, double > refractoryPeriod(
            "refractoryPeriod",
            "Minimum time between successive spikes",
            &IntFire::setRefractoryPeriod,
            &IntFire::getRefractoryPeriod
        );
        // MsgDest Definitions
        static DestFinfo activation( "activation",
            "Handles value of synaptic activation arriving on this IntFire",
            new OpFunc1< IntFire, double >( &IntFire::activation ) );

        static DestFinfo process( "process",
            "Handles process call",
            new ProcOpFunc< IntFire >( &IntFire::process ) );
        static DestFinfo reinit( "reinit",
            "Handles reinit call",
            new ProcOpFunc< IntFire >( &IntFire::reinit ) );
        // SharedFinfo Definitions
        static Finfo* procShared[] = {
            &process, &reinit
        };
        static SharedFinfo proc( "proc",
            "Shared message for process and reinit",
            procShared, sizeof( procShared ) / sizeof( const Finfo* )
        );

    static Finfo* intFireFinfos[] = {
        &Vm,    // Value
        &tau,   // Value
        &thresh,                // Value
        &refractoryPeriod,      // Value
        &activation,        // DestFinfo
        &proc,                  // SharedFinfo
        spikeOut(),         // MsgSrc
    };

    static Dinfo< IntFire > dinfo;
    static Cinfo intFireCinfo (
        "IntFire",
        Neutral::initCinfo(),
        intFireFinfos,
        sizeof( intFireFinfos ) / sizeof ( Finfo* ),
        &dinfo
    );

    return &intFireCinfo;
}

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void IntFire::innerAddSpike	(	unsigned int	synIndex,
		double	time
	)

Overrides base class function. Inserts an event into the pendingEvents queue for spikes.

void IntFire::process	(	const Eref &	e,
		ProcPtr	p
	)

Definition at line 117 of file IntFire.cpp.

References activation_, ProcInfo::currTime, Eref::dataIndex(), ProcInfo::dt, lastSpike_, refractoryPeriod_, spikeOut(), tau_, thresh_, and Vm_.

Referenced by initCinfo().

{
    static bool report = false;
    static unsigned int reportIndex = 0;
    if ( report && e.dataIndex() == reportIndex )
        cout << "   " << p->currTime << "," << Vm_;
    Vm_ += activation_;
    activation_ = 0.0;

    if ( Vm_ > thresh_ && (p->currTime - lastSpike_) > refractoryPeriod_ ) {
        spikeOut()->send( e, p->currTime );
        Vm_ = -1.0e-7;
        lastSpike_ = p->currTime;
    } else {
        Vm_ *= ( 1.0 - p->dt / tau_ );
    }
}

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void IntFire::reinit	(	const Eref &	e,
		ProcPtr	p
	)

Definition at line 135 of file IntFire.cpp.

References activation_, and Vm_.

Referenced by initCinfo().

{
    Vm_ = 0.0;
    activation_ = 0.0;
}

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void IntFire::setRefractoryPeriod

(

double

v

)

Definition at line 156 of file IntFire.cpp.

References lastSpike_, and refractoryPeriod_.

Referenced by initCinfo().

{
    refractoryPeriod_ = v;
    lastSpike_ = -v;
}

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void IntFire::setTau

(

double

v

)

Definition at line 146 of file IntFire.cpp.

References tau_.

Referenced by initCinfo().

{
    tau_ = v;
}

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void IntFire::setThresh

(

double

v

)

Definition at line 151 of file IntFire.cpp.

References thresh_.

Referenced by initCinfo().

{
    thresh_ = v;
}

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void IntFire::setVm

(

double

v

)

Definition at line 141 of file IntFire.cpp.

References Vm_.

Referenced by initCinfo().

{
    Vm_ = v;
}

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Friends And Related Function Documentation

void testStandaloneIntFire ( )

friend

void testSynapse ( )

friend

Definition at line 205 of file testSynapse.cpp.

{
#ifdef DO_UNIT_TESTS
    testRollingMatrix();
    testRollingMatrix2();
    testSeqSynapse();
#endif // DO_UNIT_TESTS
}

Member Data Documentation

double IntFire::activation_

private

Definition at line 55 of file IntFire.h.

Referenced by activation(), process(), and reinit().

double IntFire::lastSpike_

private

Definition at line 54 of file IntFire.h.

Referenced by process(), and setRefractoryPeriod().

double IntFire::refractoryPeriod_

private

Definition at line 53 of file IntFire.h.

Referenced by getRefractoryPeriod(), process(), and setRefractoryPeriod().

double IntFire::tau_

private

Definition at line 52 of file IntFire.h.

Referenced by getTau(), process(), and setTau().

double IntFire::thresh_

private

Definition at line 51 of file IntFire.h.

Referenced by getThresh(), process(), and setThresh().

double IntFire::Vm_

private

Definition at line 50 of file IntFire.h.

Referenced by getVm(), process(), reinit(), and setVm().

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The documentation for this class was generated from the following files:

• moose-core/biophysics/IntFire.h
• moose-core/biophysics/IntFire.cpp