Phase charge charge per phase

Phase charge is defined as the current-time integral over the phase duration period. Phase charge has been closely associated with the ability of a stimulus to depolarize the nerve membrane and initiate action potential propagation (Gracanin and Trnkoczy, 1975; Alon et al., 1983; Kantor et al., 1994). As the amount of phase charge increases, more nerve fibers are excited leading to stronger perception (sensory excitation) and stronger muscle contraction (Fig. 9.2) (Adams et al., 1993; Vanderthommen et al., 2000).

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