published his original research on brain mapping in the monograph Vergleichende Lokalisationslehre der Großhirnrinde (Localisation in the cerebral cortex), defining 52 distinct regions of the cerebral cortex, known as Brodmann areas now, based on regional variations in structure. These Brodmann areas were associated with diverse functions including sensation, motor control, and cognition.

* In 1924, German physiologist and psychiatrist Hans Berger (1873-1941)