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Knowing when you lie
Brain imaging ready to detect terrorists, say neuroscientists. "Brain-imaging techniques that reveal when a person is lying are now reliable enough to identify criminals, claim researchers. Team member Ruben Gur points out that, unlike the polygraph, fMRI does not rely on controllable symptoms such as sweating or a fast heartbeat. Instead it monitors the central nervous system. When someone lies, their brain inhibits them from telling the truth, and this makes the frontal lobes more active. "A lie is always more complicated than the truth," says Gur. "You think a bit more and fMRI picks that up.""
Posted by Richard on September 29, 2005 02:35 PM