The Mudcat Café TM
Thread #59418   Message #1962328
Posted By: Amos
09-Feb-07 - 11:57 AM
Thread Name: BS: The Mother of all BS threads
Subject: RE: BS: The Mother of all BS threads
Brain scans reveal intentions of calculating minds
12:43 09 February 2007
NewScientist.com news service
Roxanne Khamsi

Can a brain scan prove you're telling the truth?
06 February 2007

Brain scans that can read a person's secret intentions even before they act have been demonstrated by researchers.

In a recent study, the technology was 70% accurate at predicting whether participants planned to add or subtract a pair of numbers. Paralysed people may one day be able to use devices based on the technique to carry out complex actions, the researchers say. However, ethical concerns have been raised about its possible use in interrogation.

John-Dylan Haynes at the Max Planck Institute for Human Cognitive and Brain Sciences in Leipzig, Germany, and colleagues recruited eight people for their trial and placed each of them in a brain scanning machine that produced computed tomography (CT) images.

While participants had their brains scanned, they were asked to secretly decide whether they would add or subtract two numbers due to appear on a screen in front of them. After a pause of a few seconds, they then viewed the two numbers and gave their answer.

Train times
Once the computer program designed to interpret the brain scans had been "trained" on 40-minutes-worth of calculations by a participant, it could predict their calculating intention with 70% accuracy. Haynes explains that the computer program could do this by focusing on the pattern of activity in a brain region known as the medial prefrontal cortex.