  Neuronal cable theory is usually derived from an electric analogue of the
membrane, which contrasts with the slow movement of ions in aqueous media. We
show here that it is possible to derive neuronal cable equations from a
different perspective, based on the laws of hydrodynamic motion of charged
particles (Navier-Stokes equations). This results in similar cable equations,
but with additional contributions arising from nonlinear interactions inherent
to fluid dynamics, and which may shape the integrative properties of the
neurons.
