The Secret Life of the Brain
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History of the Brain
Portrait of Galvani

Luigi Galvani.

Luigi Galvani, an Italian physiologist, proposes that
He concludes this from experiments in which he causes frog muscles to twitch by touching them with wires. He believes that this twitching proves that electricity is flowing from the frog's muscles to the nerve. This theory is later disproved when further studies show that the electricity in Galvani's experiment was actually produced by a chemical reaction caused by acids present on the frog's skin. Even so, his work is an important first step toward the modern understanding of the electrical basis of neural activity.

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Courtesy of the National Library of Medicine.

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