In the 1920s, Oskar Vogt became interested in the potential morphological correlates of mental abilities, and hence in the neuroanatomical study of 'elite brains'. When Lenin died of a brain hemorrhage in 1924, his brain was preserved in formaldehyde, where it remained for two years.
In the 1920s, Oskar Vogt began investigating the link between brain structure and mental abilities, focusing on the anatomy of "elite" brains. After Lenin's death from a brain hemorrhage in 1924, his preserved brain was kept in formaldehyde for two years.