Release date: 2016-11-11
For the first time, scientists compared the effects of functional magnetic resonance imaging (fMRI) and polygraphs on polygraphs, and found that functional magnetic resonance imaging scans were more effective and more accurate.
According to the British Daily Mail, sweating the palms and accelerating the heartbeat may help people discover liars, but the most direct evidence of lying is from the brain. For the first time, researchers have compared functional magnetic resonance imaging (fMRI) with polygraphs. Research reveals that functional magnetic resonance imaging is a more effective method of detecting lies, which can detect brain decisions when people lie. The activation status of the area can identify 90% of people's lying phenomenon.
Researchers at the Perelman School of Medicine at the University of Pennsylvania in Pennsylvania used a standard "hidden information" to test and test these two methods of lie detection. The polygraph measures people's skin electrical conduction, heart rate, and breathing when asked. For the past 50 years, polygraphs have been the primary tool for reviewing people's lie. However, the polygraph's ability to detect lies is inconsistent. The research found that the accuracy of the polygraph is as high as 100%, but there is also a "probability of luck."
From another perspective, functional magnetic resonance imaging can survey the activity of the human brain, said Daniel D. Langleben, research director and psychiatrist, who said: "The polygraph will be the peripheral nervous system of people. Complex activity is simplified to only a few parameters. In contrast, functional magnetic resonance imaging observes thousands of brain neuron changes at higher resolutions in terms of space and time. Although both methods of observation have Unique, but we believe that brain activity is the most specific marker that we can find through functional magnetic resonance imaging.
Source: Tencent Science
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