Researchers at Tel Aviv University have detected “liars” with unprecedented 73% accuracy by measuring movements of facial muscles.
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The best and fine sleuths always have a hard time identifying with certainty the lies of a crime suspect. They are doing just a little better than the average person. And the lie detectors otherwise called polygraphes can be deceived. In short, there is still no reliable way to identify lies.
Tel Aviv University’s research on the subject may be a game-changer. Researchers have developed a system that can detect lies spoken by participants in their trials with 73% reliability. Their study is based on the detection from movements facial muscles that take place when we lie. This experiment shows that there are two types of liars: those who activate the muscles of their cheeks when they lie and those who use the muscles of their cheeks. eyebrows.
Two types of liars
The article published in Brain and Behaviour, explains that scientists have used electrodes placed on soft stickers to monitor and measure the activity of muscles and nerves. The cheek muscles near the lips and the eyebrow muscles were targeted. While, face to face, participants hardly ever succeeded in detecting the lies of their partners, the algorithm, which was trained to identify lies on the basis of the signals electromyographic, succeeded with this rate of 73%. But it should be noted that the lie in question was very simple. In real conditions, it would have been more complicated because the lies are credible because they include elements faux mingled with others who are truthful. The researchers therefore wish to continue learning their HE. They believe that in the future, by mixing this technique with very high definition cameras, it would be possible to detect lies only by the image by identifying the movements of the muscles of the face.
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