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A Review of Edward Flatau’s 1894 Atlas of the Human Brain by the Neurologist Sigmund Freud

In 1894, the Polish neurologist Edward Flatau (1868–1932), working in Berlin, published an exquisite photographic atlas of the unfixed human brain, preceding by 2 years Das Menschenhirn, the reference work of Gustaf Retzius (1842–1919) in Stockholm. In his early career as a neuroanatomist and neurologist, Sigmund Freud (1856–1939) wrote a review of Flatau’s atlas for the Internationale klinische Rundschau, which has not been included in the ‘Standard Edition of the Complete Psychological Works’. The aim of the present paper is twofold: to document Freud’s review, and to revive the largely forgotten atlas of Flatau. The full text of Freud is presented in translation. Further, one element Flatau, Retzius and Freud had in common is discussed: their early role as protagonists and firm supporters of Ramón y Cajal’s neuron theory, the cornerstone of modern neuroscience.