Word: microvolts
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Dates: during 1930-1939
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...Yale faculty announced completion of an electric machine which does very much what Abrams claimed for his condemned Oscilloclast. Professor Harold Saxton Burr, upright Yale neuroanatomist, learned son of a professor in the Y. M. C. A. at Springfield, Mass, calls the Yale machine "a vacuum tube microvolt-meter for the measurement of bioelectric phenomena." In the current Yale Journal of Biology & Medicine he and his colleagues give precise instructions for building the diagnostic machine and the principles on which it operates, something which Albert Abrams never provided for his device...
...that the brain produced electricity. Comparison of figures seemed to indicate that electric current decreases as mental activity increases. Dr. Berger distinguished two types of waves, alpha and beta. The alpha waves represented the normal electricity output of an organism when not highly stimulated. The current generated was .2 microvolt. Beta waves represented the brain's electricity production when the subject was stroked by the glass rod, told to figure out an arithmetic problem. The galvanometer at this time registered .1 microvolt...
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