A century after the EEG was discovered, it remains a crucial tool for understanding the brain
- Written by Giridhar Kalamangalam, Professor of Neurology, University of Florida
Brain waves emblematic of generalized epilepsy.Kateryna Kon/Science Photo Library via Getty ImagesJena, Germany, 1924: Working in near-isolation and with painstaking tediousness, the psychiatrist Hans Berger observes rhythmic electrical activity from the scalp of human subjects. He is convinced the activity arises from within the brain and coins...

