Berger Publishes Paper on Electroencephalogram

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First published Electroencephalogram of a human.

In 1929 German psychiatrist Hans Berger published "On the Electroencephalogram in Humans," coining the term and characterizing the brain's alpha and beta wave patterns. He had recorded his first EEGs in 1924. The technology improved in the 1930s and became widely used in the 1940s.