Abstract
In 1839, collaborating with physicist Luigi Pacinotti, the Italian physician and historian of medicine Francesco Puccinotti announced a successful measurement of the existence of electrovital currents in live warm- and cold-blooded animals. To perform this measurement, they used the astatic galvanometer developed by Leopoldo Nobili. The experimental demonstrations took place in Pisa on the morning of October 13, 1839 as part of the First Congress of Italian Scientists. The experiment had been carefully prepared and tested ahead of the Congress in June and July of the same year. Two congressional commissions, composed respectively of doctors and physicists, discussed the results of the experiments and disclosed conflicting views. The physicists diplomatically expressed doubt, saying that the current measured might have been similar, although weaker, to that found in already dead animals and therefore could be traced to physicochemical processes. A debate developed at the Congress and continued afterwards. This significant episode helped keep the question of animal electricity open in Italy, stimulating the development of new electrophysiological studies in the following decade.
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