Abstract

The whole‐nerve Action Potential (AP) and the single unit Post Stimulus Time histograms have been extensively investigated in relation to click stimulation and the on‐response provoked by a tone‐burst, but the off‐response has never been studied in detail and no interpretation is available for these phenomena. The growth of an off‐effect in the whole‐nerve AP and in the single fiber discharge pattern at the end of a tone‐burst is explained by means of some fundamental laws of the system dynamics. The available knowledge of the mechanisms of generation of the AP is sufficient enough to predict the dependence of the magnitude and of the shape of the off‐AP on the burst paradigms (frequency, amplitude and phase). Simulations of a simple single fiber model are shown to predict off‐responses with tone‐bursts and sustained stimulations. On this basis, it is suggested that a better understanding of the single unit behavior is achieved by reproducing the model predictions by specially designed animal experiments.

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