Figure 10
From: Classification of the extracellular fields produced by activated neural structures
The effects of more complex geometries of the volume conductor on the electric potentials recorded. All results refer to the following geometry. A fully insulated cylinder of radius 1 and length 10 extending from z = -10 to z = 0. This cylinder is attached to an insulated sphere of radius 5 with the two intersecting at z = 0. The plots show the potential at the flat cylindrical end (z = -10) and the end of the z = 10 spherical edge as a function of the axial location of the center of a dipole consisting of two spheres held at potentials of 1 and -1 as in Figure 8. The step in the voltage at the cylindrical end of the volume as the dipole moves through the boundary between the two regions is evident.