Fig. 2

Modeling nerve stimulation. a Model nerve fibers were placed within and parallel to a cylinder of diameter 1 mm, and bipolar point source stimulation was applied along the edge of the cylinder. The bottom plot shows the potential generated by a pulse of 20 μA along the model fiber depicted in grey. b Transverse section of one example population of 100 nerve fibers randomly placed within the cylinder. c Potential generated by TAMS (carrier frequency: 5 kHz, offset: 25 μA) on the plane of one electrode for the three fibers indicated in (b)