The Bereitschaftspotential (BP; readiness potential, although the sense of the German word is rather more imperative) was discovered in 1964 and named in 1965 by Hans Kornhuber and Lüder Deeke. In their original description it was a negative going wave of cortical potential that was first detectable 1–1.5 s before the movement occurred. Like the demonstration of evoked potentials, it …