CHICAGO - NOVEMBER 04: U.S. President elect Barack Obama embraces his daughter Malia after Obama gave his victory speech during an election night gathering in Grant Park on November 4, 2008 in Chicago, Illinois. Obama defeated Republican nominee Sen. John McCain (R-AZ) by a wide margin in the election to become the first African-American U.S. President elect. (Photo by Joe Raedle/Getty Images)
An undated image of the human brain taken through scanning technology. The scan shows a person responding to a visual scene, with the imaging technology measuring increases in blood flow to a certain region of the brain. Neuroscientists use functional magnetic resonance imaging techniques -- in which a person's head is put in a machine like a giant magnet -- to gaze deep within the brain to view neural regions that monitor behavior and regulate emotions. It is a young field, but one that ultimately could have as dramatic an impact on the legal system as DNA testing, said Michael Gazzaniga, the director of a new project to study the implications of neuroscience for the U.S. judicial system. TO MATCH FEATURE USA-LAW/BRAIN. REUTERS/Sage Center for the Study of the Mind, University of California, Santa Barbara/Handout (UNITED STATES). EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
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