indii::fmri::hemodynamic::NeuralBalloonModelDefaults

NeuralBalloonModelDefaults Class Reference

List of all members.

Detailed Description

Default biophysical parameter and function settings for NeuralBalloonModel.

These are based on values given in Friston et al. (2003).

Author:
Lawrence Murray <lawrence@indii.org>
Version:
Rev
285
Date:
Date
2007-07-20 17:25:40 +0100 (Fri, 20 Jul 2007)

Definition at line 19 of file NeuralBalloonModelDefaults.hpp.

Static Public Attributes

static const double EPSILON = 1.0
 $\epsilon$; efficacy with which neural activity causes an increase in signal.
static const double TAU_S = 1.0 / 0.65
 $\tau_s$; time constant for signal decay.
static const double TAU_F = 1.0 / 0.41
 $\tau_f$; time constant for autoregulatory feedback from blood flow.
static indii::ml::ode::f_t U
 $u(t) = 0.0$; neural activity.
static indii::ml::ode::f_t F_IN
 $f_{in}(t) = f$; enforced equivalence in NeuralBalloonModel.
static indii::ml::ode::f_t DFDT
 $\frac{df}{dt} = s$; differential equation.
static indii::ml::ode::f_t DSDT
 $\frac{ds}{dt} = \epsilon u(t) - \frac{s}{\tau_s} - \frac{(f-1)}{\tau_f}$; differential equation.

Member Data Documentation

const double EPSILON = 1.0 [static]

$\epsilon$; efficacy with which neural activity causes an increase in signal.

Definition at line 25 of file NeuralBalloonModelDefaults.hpp.

const double TAU_S = 1.0 / 0.65 [static]

$\tau_s$; time constant for signal decay.

Note that $\tau_s$ in Friston et al. (2000) equals $\frac{1}{\kappa}$ in Friston et al. (2003).

Definition at line 32 of file NeuralBalloonModelDefaults.hpp.

const double TAU_F = 1.0 / 0.41 [static]

$\tau_f$; time constant for autoregulatory feedback from blood flow.

Note that $\tau_f$ in Friston et al. (2000) equals $\frac{1}{\gamma}$ in Friston et al. (2003).

Definition at line 39 of file NeuralBalloonModelDefaults.hpp.

double U [static]

$u(t) = 0.0$; neural activity.

Definition at line 44 of file NeuralBalloonModelDefaults.hpp.

double F_IN [static]

$f_{in}(t) = f$; enforced equivalence in NeuralBalloonModel.

Definition at line 49 of file NeuralBalloonModelDefaults.hpp.

double DFDT [static]

$\frac{df}{dt} = s$; differential equation.

Definition at line 54 of file NeuralBalloonModelDefaults.hpp.

double DSDT [static]

$\frac{ds}{dt} = \epsilon u(t) - \frac{s}{\tau_s} - \frac{(f-1)}{\tau_f}$; differential equation.

Definition at line 60 of file NeuralBalloonModelDefaults.hpp.

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