Symbol

Meaning

Value and Units

d

diameter

1e−3 cm [18]

x

position

centimeter

$V\left(x\mathrm{,}t\right)$

transmembrane voltage at position...

volts

... x and time t

C

transversal...

... capacitance per unit length

F/cm

R

longitudinal resistance per unit length

Ohm/cm

G

leakage conductance per unit length

Ohm-cm

I

injected current; details in text

−4 × 10⁻⁵ A/cm

$\delta x\mathrm{,}\delta t$

mesh size

0.02 cm, 2 × 10⁻⁶ s

$m\mathrm{,}n\mathrm{,}h\mathrm{,}p\mathrm{<mo>\; ;\; </mo>}y$

activation/inactivation variables...

... and stand-in variable

$\alpha \mathrm{,}\beta$

activation/inactivation coefficients

$t\mathrm{,}{t}_1\mathrm{,}\cdots \mathrm{,}{t}_{16}$

temporal instants (time)

seconds

v

propagation velocity

centimeters per second

$K\mathrm{,}M\mathrm{,}N\mathrm{,}P$

general solution coefficients

$x_0$

support of delta function

L

length of an internode

cm

$\tau$

time elapsed between...

seconds

... successive nodal firings

$V_c$

critical value of...

volts

... the transmembrane voltage

$V_G(\cdot ),V_{Green}\left(\cdot \mathrm{,}\cdot \right)$

(mono, bi)-variate Green’s function

$I\left(\cdot \mathrm{,}\cdot \right)\mathrm{,}{I}_c$

(longitudinal, critical) current

$Q\mathrm{,}{Q}_c$

(accumulated, critical) charge

$\kappa$

gas constant

8.3145 J/K-mole

$\rho \left(T\right)$

temperature factor