 Between 1926 and 1930, Vogt travelled to Moscow several times to supervise the work on Lenin's brain by the Russian collaborators who had been trained at Vogt's KWI for Brain Research in Berlin.In 1927, Vogt gave a preliminary report on his findings in Moscow, concluding from his histological observations that Lenin must have been an athlete in associative thinking ("Assoziationsathlet") - a conclusion deemed farfetched by some of his neurologist colleagues and adversaries.Lenin's brain was, for a time, on display in the Lenin Mausoleum and now rests at Moscow's Brain Institute.