Figure 1
From: Classification of the extracellular fields produced by activated neural structures

Illustration of the geometry used in simulating the extracellular fields generated when a nerve impulse propagates through a 180° bend with radius a = 60 mm. The separation between the leading and trailing dipoles is taken as 6 mm. The recording electrode position from which the tracings are taken is located at z = -60.7 mm. The leading and trailing dipoles [13] are oppositely oriented and parallel to the tangent of the nerve.