The "brainwave machine" (electroencephalograph, to doctors) is now used mainly after people get seriously ill and doctors have to find out what's wrong. Two Cleveland neurologists report that the machine can do better than that: it can spot some kinds of crackups before outward physical signs occur (by noting abnormal patterns of brain-wave pulsation). Their recommendation: use the machine widely on railroad engineers, airplane pilots and bus drivers, and on business executives responsible for "vast undertakings."
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