November 15, 2012 Scientists have found rappers and jazz musicians use their brains in similar ways when it comes to improvisation. Brain scans show distinct differences in which parts of the brain are most active during rap performances of memorized pieces compared with those that are done freestyle.
December 1, 2011 Maybe you didn't need that MRI, but your doctor did. Scans are more likely to find no problems if doctors make money from the MRI, a study concludes. Congress and the states have tried to crack down on doctors self-referring to scanners they own, but the practice continues to drive up health care costs.