![]() ![]() Berger connected these sensors to a Lippmann capillary electrometer, with disappointing results. These were later replaced by silver foils attached to the patient's head by rubber bandages. He inserted silver wires under the scalps of his patients. Berger was able to identify oscillatory activity, such as Berger's wave or the alpha wave (8–13 Hz), by analyzing EEG traces.īerger's first recording device was very rudimentary. In 1924 Berger was the first to record human brain activity by means of EEG. The history of brain–computer interfaces (BCIs) starts with Hans Berger's discovery of the electrical activity of the human brain and the development of electroencephalography (EEG).
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