Simulation der Funktionellen Elektrostimulation an der denervierten Oberschenkelmuskulatur

Abstract

SlA Imitc difference model of the human is used to analy/c thc exeilation process in the öl dcncrvatcd skeletal muscles vvhich are neu \ suilace eleclrodes. The MATLAB ivscaivh lool S-HhLD was developed to simulate the siahiinaiA fickl for real human 3D geometry and FES \\Al.YSl· for a tust eslimate of superthreshold K'L'ions Aclion potenlial initiation is simulated with a muscle hber model of the Hodgkin Huxley type and u iih a gcnerali/ed form of the activating function. \{ ihc cndmgs of a targct fiber llie activating function is ptoporiional to the first derivative of the extracellular \oltage, whereas the second derivative is the driving clcment for the cenlral pari. The analysis demonstrates ihat ü is generally easier to initiale action potentials at thc fibcr cndmgs especially for fibers in deeper regions.