Excitation and Initiation of Impulse

Part I. Stimulation with Constant Current

Abstract

1. Standing on a theoretical ground, excitation was distinguished from initiation of impulse.
2. Regarding the initiation of impulse as due to simultaneous excitation of a certain length L in less than D (duration of excitation), a theoretical treatment was developed on various phenomena of excitation. Chief phenomena explained were, a) appearance of Ir (rheobase for initiation of impulse) combined with a proper duration, tr, and b) repetitive responses without rise of threshold.
3. Discussions were made on a) existence of L, b) strength-duration-relation in initiation of impulse, c) I_r, i_r, t_r and τ (chronaxie), and 4) repetitive responses.