tracking threshold has advantages over other electrophysiological techniques, like the constant stimulus method. this technique can track threshold changes within a dynamic range of 200% and in general give more insight into axonal properties than other tests. also, this technique allows for changes in threshold to be given a quantitative value, which when mathematically converted into a percentage, can be used to compare single fiber and multifiber preparations, different neuronal sites, and nerve excitability in different species.