Excitation and Initiation of Impulse

Part. II. Stimulation with Slowly Rising and Alternating Currents

Abstract

1. It was shown that the following four facts can be the case without accommodation:
a) Appearance of a liminal gradient Pr in stimulation with linearly rising current.
b) Linear relationship between final current and time constant in stimulation with exponentially increasing current.
c) Repetitive responses to linearly rising current.
d) Intensity minimum or frequency optimum in stimulation with alternating current.
2. Lapicque's “soeul de climalyse” was explained.
3. Discussions were made on: a) identity of β_r and I∞-γ-line, b) independence of β'_r and I∞-γ-line from accommodation, c) meaning of β_r, and d) modes of action of slowly rising currents as stimuli for initiation of impulse.