Calculation of the contribution to the eCAP for myelinated afferent fibers from three representative fascicles.

a: Fraction of myelinated afferent fibers R i ( d ) recruited as a function of diameter. b: Myelinated afferent fiber diameter distribution . c: Scaling of transmembrane currents as a function of fiber diameter. d: Scaling factor . e: Sensitivity function , plotted for diameters 3 μ m (solid lines) and 3.1 μ m (dashed lines). f: Exposure function X i ( t ) for each fascicle. Sum of scaled by the diameter-dependent factor over all diameters. g: Second derivative of the AP; identical to the transmembrane current up to a scaling factor (panel c). h: eCAP contribution; convolution of f and g.