com.croftsoft.core.ai.neuro.imp
Class HhNeuronImp

java.lang.Object
  com.croftsoft.core.ai.neuro.imp.HhNeuronImp

All Implemented Interfaces:

HhNeuron, HhNeuronMut, Neuron, Sim

public final class HhNeuronImp
extends Object
implements HhNeuronMut, Sim

Hodgkin-Huxley (HH) neuron. Voltages are in units of volts instead of millivolts. Area-based units are in meters squared instead of centimeters squared. For a good description of how the HH equations are derived, see Nelson, "Chapter 17: Electrophysiological Models", p285, in Koslow and Subramaniam, "Databasing the Brain: From Data to Knowledge (Neuroinformatics)", 2005. Other references used in implementing the HH equations include: Doi and Kumagai, "Nonlinear Dynamics of Small-Scale Biophysical Neural Networks", Chapter 10, p263, in Poznanski, "Biophysical Neural Networks: Foundations of Integrative Neuroscience", 2001. Feng, "Computational Neuroscience: A Comprehensive Approach", 2004, p4 and p30.

Since:

2008-08-08

Version:

$Id: HhNeuronImp.java,v 1.14 2008/09/07 01:48:31 croft Exp $

Author:

David Wallace Croft

Field Summary

static double	H_INIT
static double	LEAK_CONDUCTIVITY
static double	LEAK_REVERSAL_POTENTIAL
static double	LHOPITAL_THRESHOLD
static double	M_INIT
static double	MEMBRANE_AREA Area of sphere of 10 microns in diameter in meters squared
static double	MEMBRANE_CAPACITIVITY
static double	MEMBRANE_VOLTAGE_INIT
static double	N_INIT
static double	POTASSIUM_CONDUCTIVITY
static double	POTASSIUM_REVERSAL_POTENTIAL
static double	SODIUM_CONDUCTIVITY
static double	SODIUM_REVERSAL_POTENTIAL
static double	THRESHOLD

Constructor Summary

HhNeuronImp(Seq<Channel> channelSeq, DeltaClock deltaClock)

HhNeuronImp(Seq<Channel> channelSeq, DeltaClock deltaClock, double h, double leakConductivity, double leakReversalPotential, double m, double membraneArea, double membraneCapacitivity, double membraneVoltage, double n, double potassiumConductivity, double potassiumReversalPotential, double sodiumConductivity, double sodiumReversalPotential, double threshold)

Method Summary

void	access()
double	getH()
double	getLeakConductivity()
double	getM()
double	getMembraneArea()
double	getMembraneCapacitivity()
double	getMembraneVoltage()
double	getN()
double	getPotassiumConductivity()
double	getSodiumConductivity()
double	getThreshold()
boolean	isSpiking()
void	mutate()
void	setLeakConductivity(double leakConductivity)
void	setMembraneArea(double membraneArea)
void	setMembraneCapacitivity(double membraneCapacitivity)
void	setMembraneVoltage(double membraneVoltage)
void	setPotassiumConductivity(double potassiumConductivity)
void	setSodiumConductivity(double sodiumConductivity)
void	setThreshold(double threshold)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

H_INIT

public static final double H_INIT

See Also:

Constant Field Values

LEAK_CONDUCTIVITY

public static final double LEAK_CONDUCTIVITY

See Also:

Constant Field Values

LEAK_REVERSAL_POTENTIAL

public static final double LEAK_REVERSAL_POTENTIAL

See Also:

Constant Field Values

LHOPITAL_THRESHOLD

public static final double LHOPITAL_THRESHOLD

See Also:

Constant Field Values

M_INIT

public static final double M_INIT

See Also:

Constant Field Values

MEMBRANE_CAPACITIVITY

public static final double MEMBRANE_CAPACITIVITY

See Also:

Constant Field Values

MEMBRANE_VOLTAGE_INIT

public static final double MEMBRANE_VOLTAGE_INIT

See Also:

Constant Field Values

N_INIT

public static final double N_INIT

See Also:

Constant Field Values

POTASSIUM_CONDUCTIVITY

public static final double POTASSIUM_CONDUCTIVITY

See Also:

Constant Field Values

POTASSIUM_REVERSAL_POTENTIAL

public static final double POTASSIUM_REVERSAL_POTENTIAL

See Also:

Constant Field Values

SODIUM_CONDUCTIVITY

public static final double SODIUM_CONDUCTIVITY

See Also:

Constant Field Values

SODIUM_REVERSAL_POTENTIAL

public static final double SODIUM_REVERSAL_POTENTIAL

See Also:

Constant Field Values

THRESHOLD

public static final double THRESHOLD

See Also:

Constant Field Values

MEMBRANE_AREA

public static final double MEMBRANE_AREA

Area of sphere of 10 microns in diameter in meters squared

See Also:

Constant Field Values

Constructor Detail

HhNeuronImp

public HhNeuronImp(Seq<Channel> channelSeq,
                   DeltaClock deltaClock,
                   double h,
                   double leakConductivity,
                   double leakReversalPotential,
                   double m,
                   double membraneArea,
                   double membraneCapacitivity,
                   double membraneVoltage,
                   double n,
                   double potassiumConductivity,
                   double potassiumReversalPotential,
                   double sodiumConductivity,
                   double sodiumReversalPotential,
                   double threshold)

HhNeuronImp

public HhNeuronImp(Seq<Channel> channelSeq,
                   DeltaClock deltaClock)

Method Detail

getH

public double getH()

Specified by:

getH in interface HhNeuron

getLeakConductivity

public double getLeakConductivity()

Specified by:

getLeakConductivity in interface HhNeuron

getM

public double getM()

Specified by:

getM in interface HhNeuron

getMembraneArea

public double getMembraneArea()

getMembraneCapacitivity

public double getMembraneCapacitivity()

Specified by:

getMembraneCapacitivity in interface HhNeuron

getMembraneVoltage

public double getMembraneVoltage()

Specified by:

getMembraneVoltage in interface HhNeuron

getN

public double getN()

Specified by:

getN in interface HhNeuron

getPotassiumConductivity

public double getPotassiumConductivity()

Specified by:

getPotassiumConductivity in interface HhNeuron

getSodiumConductivity

public double getSodiumConductivity()

Specified by:

getSodiumConductivity in interface HhNeuron

getThreshold

public double getThreshold()

Specified by:

getThreshold in interface HhNeuron

isSpiking

public boolean isSpiking()

Specified by:

isSpiking in interface Neuron

setLeakConductivity

public void setLeakConductivity(double leakConductivity)

Specified by:

setLeakConductivity in interface HhNeuronMut

setMembraneArea

public void setMembraneArea(double membraneArea)

Specified by:

setMembraneArea in interface HhNeuronMut

setMembraneCapacitivity

public void setMembraneCapacitivity(double membraneCapacitivity)

Specified by:

setMembraneCapacitivity in interface HhNeuronMut

setMembraneVoltage

public void setMembraneVoltage(double membraneVoltage)

Specified by:

setMembraneVoltage in interface HhNeuronMut

setPotassiumConductivity

public void setPotassiumConductivity(double potassiumConductivity)

Specified by:

setPotassiumConductivity in interface HhNeuronMut

setSodiumConductivity

public void setSodiumConductivity(double sodiumConductivity)

Specified by:

setSodiumConductivity in interface HhNeuronMut

setThreshold

public void setThreshold(double threshold)

Specified by:

setThreshold in interface HhNeuronMut

access

public void access()

Specified by:

access in interface Sim

mutate

public void mutate()

Specified by:

mutate in interface Sim