[Johann Mueller and modern experimental research]

Johann Mueller believes "time of observation" basis of scientific research, to have an almost exclusive function in methodologic reflection and axiomatic construction. Though tolerating some deriving principles from "Philosophy of Nature" - which presents accidental facts only by generic images, without entering causes - he maintains that things of the surrounding world cannot be demonstrated in themselves, but only through the events they generate in affecting our sensory organs. Assuming that studies about morphology and physiology in general serve as an introduction to the specific study of single organs and apparatuses, Mueller points out a new address for physiologic investigation, based upon measurement and comparison criteria independent from various mechanisms involved in the determinism of function.