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The recording of electroencephalographic tracings in patients with epilepsy, intracranial tumors and cerebral trauma, as well as in some psychiatric states, is now a standard diagnostic procedure in all medical centers. Equipment of a relatively uniform type is available, and there is a large body of scientists who have been trained to operate the complicated apparatus and to interpret the results. Although Caton may have shown that there were electric discharges from the brain as early as 1875, it was not until 1928, when Hans Berger published his first paper, that electroencephalography was put on a sound basis. Even Berger's work was not fully appreciated as a clinical tool or as an accepted physiological phenomenon until 1934-1935, when the proof that the rhythms obtained by Berger originated in the brain was supplied by Adrian and Matthews. In July 1947, a group of representatives of various countries met in London and
Electroencephalography: A Symposium on Its Various Aspects. JAMA. 1951;145(13):1020. doi:10.1001/jama.1951.02920310076034