When was the first EEG recorded from a human brain?

Hans Berger recorded the first human EEG in 1924, although he published his findings a few years later. The EEG made it possible to measure brain electrical activity from the scalp, opening a new era in neuroscience and clinical neurology. Berger’s discovery helped scientists study sleep, epilepsy, and many brain states. It is still a standard tool in hospitals and research labs.