Doctors Diagnose in a Jiffy—and Using Common Regions of the Brain. A new view on medicine: How doctors view x-rays; courtesy of Melo M, Scarpin DJ, Amaro E Jr, Passos RBD, Sato JR, et al. Medical school might be a long, slow slog, but once doctors have their training, they can often make diagnoses in a matter of moments. New research suggests that doctors actually identify an abnormality in less than two seconds—not much longer than it takes them to name an animal or a letter of the alphabet. Twenty-five radiologists submitted to having their brains scanned while performing visual diagnoses of chest x-rays. Mixed in with images of abnormal chest x-rays were clean ones on which the outline of an animal or consonant had been superimposed to test the speed with which doctors recognized familiar objects. The researchers, led by Marcio Melo, of the Laboratory of Medical Informatics at the University of São Paulo, found that the same regions of the brain were active when doctors correctly identified any of the three objects.
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DesignCon ESC Brazil ARM Techcon ESC India EETimes University Tech Papers Courses Fundamentals Webinars Design West. Who is the best scientist of them all? Roger Viollet Collection/Getty Karl Marx is the most influential scholar ever, according to a discipline-corrected ranking system. Is theoretical physicist Ed Witten more influential in his field than the biologist Solomon Snyder is among life scientists? And how do their records of scholarly impact measure up against those of past greats such as Karl Marx among historians and economists, or Sigmund Freud among psychologists? Performance metrics based on values such as citation rates are heavily biased by field, so most measurement experts shy away from interdisciplinary comparisons. The average biochemist, for example, will always score more highly than the average mathematician, because biochemistry attracts more citations. But researchers at Indiana University Bloomington think that they have worked out the best way of correcting this disciplinary bias.
And they are publishing their scores online, for the first time letting academics compare rankings across all fields. Universal metrics.