 World War I delayed the plans for a new building to house the KWI for Brain Research.The KWI's first proper building in Berlin-Buch was only inaugurated in 1931 under the directorship of Oskar Vogt.It was the world's largest and most modern brain research institute of its time, including Departments of Neurophysiology (Tönnies and Kornmüller), Neurochemistry (Marthe Vogt and Veit), Genetics (Timoféeff-Ressovsky), a Research Clinic (Soeken, Zwirner), and the Neuroanatomical Departments of Oskar and his wife Cécile Vogt.