The building up of the Berlin Institute for Brain Research finished in 1931 is the result of inconsistant developmental needs immanent to neuro-sciences on the one hand and science policy interests of imperialistic groups in the Weimarian Germany on the other hand. The theoretical and organizational analysis of the institutional concept realized by plans of Oskar Vogt gives evidence for its usefulness on principle for recent plannings of new brain research institutions too. But only after destroying the fascist dictatorship realistic developmental perspectives for brain research grew up in either German states depending on their various socio-economic conditions.