Knowing the distribution of the voltage V(x,t) spread along the dendritic axis we
could find the distribution of the electric intensity along the dendrite in space and
time after differentiation:
(70)
——
E = -V V =
dV t 1 -x
(Xt) = 1 V0 e ×λ
dx λ 0
-t/
.e τ
The maximal electric field intensity for a single excitatory postsynaptic potential
with magnitude of 0.2mV is ~0.57 V/m.
0.2
0.4
40
0.8
30
20
10
0
0
0.2
0.4
0.6
1 0
Fig. 11 Distribution of the electric intensity along the axis of the dendrite after
application of single EPSP (0.2mV) at the top of dendrite with diameter d~1μm,
length l~1mm in time interval of 40ms (λ=353μm and τ=30ms).
40
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