Anatomically accurate model of EMG during index finger flexion and abduction derived from diffusion tensor imaging
Fig 3
Simulated signals obtained from five distinct EMG models of varying geometrical and electrical characteristics.
(a) Electric potential produced by the activation of a representative motor unit (MU 52) at a single monopolar electrode. Features of the electromyograms (monopolar channels) generated using the five models: RMS voltage (b) and median frequency (c). Model I—Analytical infinite volume conductor model (isotropic); Model II—Homogeneous FE model; Model III—Inhomogeneous FE model; Model IV—Inhomogeneous FE model with anisotropic FDI (anisotropy ratio 4.4); Model V—Inhomogeneous FE model with high FDI anisotropy (anisotropy ratio 10).