The name is absent

Electric currents in dendrites

From the Ohm’s law we could calculate the axial current i_a if we know the
applied voltage V0 upon the dendritic projection:

where l is the direction along the axis of the dendrite. The same equation is valid
for the axial current outside the dendrite; the only difference is that we should use
the r_e value. The currents flowing along the dendrite under applied depolarizing
or hyperpolarizing impulses are known as local currents. If we have depolarizing
impulse there is positive current i₊ flowing from the excited area towards the
non-excited regions inside the cytoplasm, while outside of the dendrite the
positive currents flow towards the place of excitation.

4R

Taking into account that ri -   2 we obtain:

πd²

=   ∂V πd²   = πd²

I, -      .------- E.-----

a ∂l 4 RA     4 RA

Calculation of the current through the dendrite after applied EPSP with

magnitude of 0.2mV gives us:

This result is less than the registered evoked inhibitory postsynaptic currents
(eIPSCs) which amplitude varies from 20pA to 100pA (Kirischuk et al., 1999;
Akaike et al., 2002; Akaike & Moorhouse, 2003).

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