#include <QIF.h>

Inheritance diagram for moose::QIF:

Collaboration diagram for moose::QIF:

Public Member Functions
double	getA0 (const Eref &e) const

double	getVCritical (const Eref &e) const

	QIF ()

void	setA0 (const Eref &e, double val)

void	setVCritical (const Eref &e, double val)

void	vProcess (const Eref &e, ProcPtr p)

void	vReinit (const Eref &e, ProcPtr p)

virtual	~QIF ()

Public Member Functions inherited from moose::IntFireBase
void	activation (double val)

double	getLastEventTime (const Eref &e) const

double	getRefractoryPeriod (const Eref &e) const

double	getThresh (const Eref &e) const

double	getVReset (const Eref &e) const

bool	hasFired (const Eref &e) const

	IntFireBase ()

void	setRefractoryPeriod (const Eref &e, double val)

void	setThresh (const Eref &e, double val)

void	setVReset (const Eref &e, double val)

virtual	~IntFireBase ()

Public Member Functions inherited from moose::Compartment
void	cable ()

	Compartment ()

virtual double	vGetCm (const Eref &e) const

virtual double	vGetEm (const Eref &e) const

virtual double	vGetIm (const Eref &e) const

virtual double	vGetInitVm (const Eref &e) const

virtual double	vGetInject (const Eref &e) const

virtual double	vGetRa (const Eref &e) const

virtual double	vGetRm (const Eref &e) const

virtual double	vGetVm (const Eref &e) const

void	vHandleAxial (double Vm)

void	vHandleChannel (const Eref &e, double Gk, double Ek)

void	vHandleRaxial (double Ra, double Vm)

void	vInitProc (const Eref &e, ProcPtr p)

void	vInitReinit (const Eref &e, ProcPtr p)

void	vInjectMsg (const Eref &e, double current)

void	vRandInject (const Eref &e, double prob, double current)

virtual void	vSetCm (const Eref &e, double Cm)

virtual void	vSetEm (const Eref &e, double Em)

virtual void	vSetInitVm (const Eref &e, double initVm)

virtual void	vSetInject (const Eref &e, double Inject)

virtual void	vSetRa (const Eref &e, double Ra)

virtual void	vSetRm (const Eref &e, double Rm)

virtual void	vSetVm (const Eref &e, double Vm)

virtual	~Compartment ()

Public Member Functions inherited from moose::CompartmentBase
void	cable ()

	CompartmentBase ()

void	displace (double dx, double dy, double dz)
	Displaces compartment by specified distance vector. More...

double	getCm (const Eref &e) const

double	getDiameter () const

double	getEm (const Eref &e) const

double	getIm (const Eref &e) const

double	getInitVm (const Eref &e) const

double	getInject (const Eref &e) const

double	getLength () const

double	getRa (const Eref &e) const

double	getRm (const Eref &e) const

double	getVm (const Eref &e) const

double	getX () const

double	getX0 () const

double	getY () const

double	getY0 () const

double	getZ () const

double	getZ0 () const

void	handleAxial (double Vm)

void	handleChannel (const Eref &e, double Gk, double Ek)

void	handleRaxial (double Ra, double Vm)

void	initProc (const Eref &e, ProcPtr p)

void	initReinit (const Eref &e, ProcPtr p)

void	injectMsg (const Eref &e, double current)

void	process (const Eref &e, ProcPtr p)

void	randInject (const Eref &e, double prob, double current)

bool	rangeWarning (const string &field, double value)

void	reinit (const Eref &e, ProcPtr p)

void	setCm (const Eref &e, double Cm)

void	setDiameter (double diameter)

void	setEm (const Eref &e, double Em)

void	setGeomAndElec (const Eref &e, double length, double dia)
	Scales electrical values along with setting length, dia. More...

void	setInitVm (const Eref &e, double initVm)

void	setInject (const Eref &e, double Inject)

void	setLength (double length)

void	setRa (const Eref &e, double Ra)

void	setRm (const Eref &e, double Rm)

void	setVm (const Eref &e, double Vm)

void	setX (double value)

void	setX0 (double value)

void	setY (double value)

void	setY0 (double value)

void	setZ (double value)

void	setZ0 (double value)

void	updateLength ()

virtual void	vSetSolver (const Eref &e, Id hsolve)

virtual	~CompartmentBase ()

Static Public Member Functions
static const Cinfo *	initCinfo ()

Static Public Member Functions inherited from moose::IntFireBase
static const Cinfo *	initCinfo ()

static SrcFinfo1< double > *	spikeOut ()
	Message src for outgoing spikes. More...

Static Public Member Functions inherited from moose::Compartment
static const Cinfo *	initCinfo ()

Static Public Member Functions inherited from moose::CompartmentBase
static const Cinfo *	initCinfo ()

static SrcFinfo1< double > *	VmOut ()

static void	zombify (Element orig, const Cinfo zClass, Id hsolve)

Private Attributes
double	a0_

double	vCritical_

Additional Inherited Members
Protected Attributes inherited from moose::IntFireBase
double	activation_

bool	fired_

double	lastEvent_

double	refractT_

double	threshold_

double	vReset_

Protected Attributes inherited from moose::Compartment
double	A_

double	B_

double	Cm_

double	Em_

double	Im_

double	initVm_

double	inject_

double	lastIm_

double	Ra_

double	Rm_

double	sumInject_

double	Vm_

Detailed Description

The Quadratic Integrate and Fire class sets up an integrate-and-fire compartment, with a qudratic sub threshold behaviour.

Definition at line 21 of file QIF.h.

Constructor & Destructor Documentation

QIF::QIF ( )

Definition at line 70 of file QIF.cpp.

References a0_, and vCritical_.

71 {a0_ = 0.0;

72 vCritical_ = 0.0;}

moose::QIF::a0_

double a0_

Definition: QIF.h:50

moose::QIF::vCritical_

double vCritical_

Definition: QIF.h:49

QIF::~QIF ( )

virtual

Definition at line 74 of file QIF.cpp.

75 {;}

Member Function Documentation

double QIF::getA0 ( const Eref & e ) const

Definition at line 139 of file QIF.cpp.

References a0_.

Referenced by initCinfo().

 {
     return a0_;
 }

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double QIF::getVCritical ( const Eref & e ) const

Definition at line 129 of file QIF.cpp.

References vCritical_.

Referenced by initCinfo().

 {
     return vCritical_;
 }

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const Cinfo * QIF::initCinfo ( )

static

Initializes the class info.

Definition at line 19 of file QIF.cpp.

References getA0(), getVCritical(), moose::IntFireBase::initCinfo(), QIFCinfo, setA0(), and setVCritical().

 {
     static string doc[] =
     {
         "Name", "QIF",
         "Author", "Aditya Gilra",
         "Description", "Leaky Integrate-and-Fire neuron with Quadratic term in Vm."
         "Based on Spiking Neuron Models book by Gerstner and Kistler."
         "Rm*Cm * dVm/dt = a0*(Vm-Em)*(Vm-vCritical) + Rm*I"
     };
 
     static ElementValueFinfo< QIF, double > vCritical(
         "vCritical",
         "Critical voltage for spike initiation",
         &QIF::setVCritical,
         &QIF::getVCritical
     );
 
 
     static ElementValueFinfo< QIF, double > a0(
         "a0",
         "Parameter in Rm*Cm dVm/dt = a0*(Vm-Em)*(Vm-vCritical) + Rm*I, a0>0",
         &QIF::setA0,
         &QIF::getA0
     );
 
     static Finfo* QIFFinfos[] = {
         &vCritical,     // Value
         &a0             // Value
     };
 
     static Dinfo< QIF > dinfo;
     static Cinfo QIFCinfo(
                 "QIF",
                 IntFireBase::initCinfo(), // this is the initCinfo of the parent class
                 QIFFinfos,
                 sizeof( QIFFinfos ) / sizeof (Finfo*),
                 &dinfo,
                 doc,
                 sizeof(doc)/sizeof(string)
     );
 
     return &QIFCinfo;
 }

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void QIF::setA0	(	const Eref &	e,
		double	val
	)

Definition at line 134 of file QIF.cpp.

References a0_.

Referenced by initCinfo().

 {
     a0_ = val;
 }

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void QIF::setVCritical	(	const Eref &	e,
		double	val
	)

Definition at line 124 of file QIF.cpp.

References vCritical_.

Referenced by initCinfo().

 {
     vCritical_ = val;
 }

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void QIF::vProcess	(	const Eref &	e,
		ProcPtr	p
	)

virtual

The process function does the object updating and sends out messages to channels, nernsts, and so on.

Implements moose::IntFireBase.

Definition at line 81 of file QIF.cpp.

References a0_, moose::IntFireBase::activation_, moose::Compartment::Cm_, ProcInfo::currTime, ProcInfo::dt, moose::Compartment::Em_, moose::IntFireBase::fired_, moose::Compartment::Im_, moose::Compartment::inject_, moose::IntFireBase::lastEvent_, moose::Compartment::lastIm_, moose::IntFireBase::refractT_, moose::Compartment::Rm_, moose::IntFireBase::spikeOut(), moose::Compartment::sumInject_, moose::IntFireBase::threshold_, vCritical_, moose::Compartment::Vm_, moose::CompartmentBase::VmOut(), and moose::IntFireBase::vReset_.

 {
     // fully taking over Compartment's vProcess due to quadratic term in Vm
     // we no longer care about A and B
     fired_ = false;
     if ( p->currTime < lastEvent_ + refractT_ ) {
         Vm_ = vReset_;
         sumInject_ = 0.0;
         VmOut()->send( e, Vm_ );
     } else {
         // activation can be a continous variable (graded synapse).
         // So integrate it at every time step, thus *dt.
         // For a delta-fn synapse, SynHandler-s divide by dt and send activation.
         // See: http://www.genesis-sim.org/GENESIS/Hyperdoc/Manual-26.html#synchan
         //          for this continuous definition of activation.
         Vm_ += activation_ * p->dt;
         activation_ = 0.0;
         if ( Vm_ > threshold_ ) {
             Vm_ = vReset_;
             lastEvent_ = p->currTime;
             fired_ = true;
             spikeOut()->send( e, p->currTime );
             VmOut()->send( e, Vm_ );
         } else {
             Vm_ += ( (inject_+sumInject_)
                     + a0_*(Vm_-Em_)*(Vm_-vCritical_)/Rm_ ) * p->dt / Cm_;
             lastIm_ = Im_;
             Im_ = 0.0;
             sumInject_ = 0.0;
             // Send out Vm to channels, SpikeGens, etc.
             VmOut()->send( e, Vm_ );
         }
     }
 }

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void QIF::vReinit	(	const Eref &	e,
		ProcPtr	p
	)

virtual

The reinit function reinitializes all fields.

Implements moose::IntFireBase.

Definition at line 116 of file QIF.cpp.

References moose::IntFireBase::activation_, moose::IntFireBase::fired_, moose::IntFireBase::lastEvent_, moose::IntFireBase::refractT_, and moose::Compartment::vReinit().

 {
     activation_ = 0.0;
     fired_ = false;
     lastEvent_ = -refractT_; // Allow it to fire right away.
     Compartment::vReinit( e, p );
 }

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Member Data Documentation

double moose::QIF::a0_

private

Definition at line 50 of file QIF.h.

Referenced by getA0(), QIF(), setA0(), and vProcess().

double moose::QIF::vCritical_

private

Definition at line 49 of file QIF.h.

Referenced by getVCritical(), QIF(), setVCritical(), and vProcess().

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

moose-core/intfire/QIF.h
moose-core/intfire/QIF.cpp

Public Member Functions

Static Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation