British and Dutch scientists have developed a new type of cooperation polygraph, you can suspect the joints activity monitored to determine whether it involved.
Test results show that the accuracy of this polygraph more than 70%. At present, the use of polygraph polygraph instrument called by tracings pulse, breathing rate, sweating and breathing and many other physiological parameters change to reflect the degree of a person’s guilty conscience.
This polygraph technology came nearly a century, and is still widely used in the United States, but in Europe has been part of the “non-mainstream” means criminal investigation. According to the British “Daily Telegraph” recently reported that the new polygraph is “more likely to lie restless” as the basic premise, which uses 17 sensors on the body 23 for three-dimensional record of joint activities, frequency up to 120 times per second.
Involved in the study of security engineering professor Ross Anderson of Cambridge, said: “Research shows that the polygraph technique for decades, interrogators to tell a lie and the truth of the success rate is only a little better than random, about 55 percent.”
“Polygraph instrument since the 1920s had access application, by measuring the anxiety induced by physiological stress response (polygraph) accuracy can reach 60%.
However, it is very easy to be a verdict in the trial standards subject to abuse. “the research team at Lancaster University, 180 students and staff who tested the new polygraph, half of these subjects were told to say the truth, the other half had to lie. Ross said that the reliability of the new technology more than 70% in some tests up to 80%.