A Lead Field Two-Domain Model for Longitudinal Neural Tracts—Analytical Framework and Implications for Signal Bandwidth

Figure 1

Concept of the lead field two-domain model. (a) A neural tract of diameter contains a large number of individual fibers (light red) surrounded by myelin layers (gray). (b) For computation of a lead field potential in the distant field point , the individual fibers can be considered on a central axis of the neural tract (red, active domain). The current return in the volume conductor of average bulk conductivity generates the extracellular potential field .