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MRI Lie Detector
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Summary
The polygraph relies on measuring body changes, such as increased heart rate or perspiration, to tell whether or not someone is lying. However, the polygraph is accurate only 75% of the time. Using MRI brain scanners, scientists at Temple University are developing a way to detect lying by looking directly at people’s brain activity. They are going to the source – the region of the brain that is actually formulating a response that is truthful, or untruthful. MRI brain scans show areas that only light up during lying. The brain has to work harder to lie than to tell the truth, and this extra activity shows up in the MRI.
Keywords: lie detector, MRI, police, Temple University
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