English: Schematic overview of cable theory's simplified view of a piece of neuronal fiber. When an electrical current is moving along the inside of a fiber the cytosol exerts a resistance r_l. Simultaneously current will escape through the phospholipid bilayer (with resistance r_m) to the outside; and due to electrostatic forces a buildup of charge c_m will take place along the bilayer.
Vectorized version of work by Michael Klausen.
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