SAN DIEGO (AP) - Applying some of the same brain-scan technology used to understand Alzheimer's and autism, scientists are trying to learn what makes a Republican's mind different from a Democrat's.
Brain scanning is moving rapidly beyond diseases to measuring how we react to religious experiences, racial prejudice, even Coke versus Pepsi. This election season, some scientists are trying to find out whether the technology can help political consultants get inside voters' heads more effectively than focus groups or polls.
Already, the scientists are predicting that brain scanning - known as functional magnetic resonance imaging, or fMRI - will be a campaign staple four years from now, despite ethical concerns about "neuromarketing."
Brain scans measure blood flow. When brain cells start firing in a part of the brain that governs a particular emotion or activity, they need more oxygen, which is carried by the blood. During an fMRI, active regions of the brain can be seen lighting up on a computer monitor.
http://apnews1.iwon.com/article/20041029/D8613JJ01.html