Progress toward characterization of structural and biophysical properties of neural dendrites together with recent findings emphasizing their role in neural computation, has propelled growing interest in refining existing theoretical models of electrical propagation in dendrites while advocating novel analytic tools. In this paper we focus on the cable equation describing electric propagation in dendrites with different geometry. When the geometry is cylindrical we show that the cable equation is invariant under the Schr��dinger group and by using the dendrite parameters, a representation of the Schr��dinger algebra is provided. Furthermore, when the geometry profile is parabolic we show that the cable equation is equivalent to the Schr��dinger equation for the 1-dimensional free particle, which is invariant under the Schr��dinger group. Moreover, we show that there is a family of dendrite geometries for which the cable equation is equivalent to the Schr��dinger equation for the 1-dimensional conformal quantum mechanics.

19 pages