- From Bernstein's rheotome to Neher‐Sakmann’s patch electrode. The action potential
(A) Photograph of Julius Bernstein at the time of his rectorship at the University of Halle (1890). With permission reproduced from (Seyfarth 2006). (B) Drawing of the first action potential in nerve. The negative variation was measured using the rheotome build by Bernstein. With permission reproduced from (Nilius 2003).