The name is absent



Some of the specific parameters were experimentally estimated for real neurons.
The
specific axial resistance RA is 0.6-1 Ω.m (Miller, 1980; Miller et al., 1985;
Fleshman et al., 1988). The value of the specific membrane resistance RM is
0.5-10
Ω.m2 (Miller et al., 1985; Cauller, 2003) and for the specific membrane
capacitance C
M it is 0.01 F/m2 (Miller et al., 1985).

If we introduce a rectangular electric impulse with voltage V, then the voltage
across the membrane changes according to the
cable equation:

(59)


-λ2


2V

x2


V

+ τ + V = 0

t


where

(60)


τ=rmcm=RmCm=RMCM


is the time constant (τ) and

(61)


λ2 =  rm

is the square of the space constant (λ).

In neurons ri » re (Sajda, 2002) so we can write:

λ=

dRM

4 RA


(62)

35



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