What changes there will be physical and psychological liar?

Remember "Pinocchio" do? Fairy Pinocchio said, anything liar, the body will have two changes: the nose longer or shorter legs. In reality, people lying, physical and psychological changes also occur, but this depends on the level of the Liar, liar by looking smart appearance is difficult to judge, or even fool the polygraph.

 
General liar details cloven hoof
Crisis Intervention in Guangdong Province Fai Union members at the introduction of behavioral psychology can be compared to the usual liar voice, facial expressions, eyes will be some changes, of course, limited to ordinary people, clever liar is difficult to find from the outside flaws.

 
Typically, the speaker sound will be different as before. Some studies suggest that the average time a person to lie than tell the truth when tone average tone, but the difference is very small, difficult to judge the ear alone. Fai said in there listening to him in person and make eye contact, eyes will be erratic, expression is not entirely natural, the hearts have secrets, easy to could not help laughing.

 
Psychological suggestion can fool the polygraph
How Fugao Ming liar? Was proposed using the polygraph. Traditional polygraph known as the "number recorder", according to their theory, when measured by lying, there will be rapid heart beat, sweating and even breathing became rapid. In this way, examiners, and the analysis was tested by recording people's pulse, blood pressure, respiration, skin resistance changes and other information, to determine the authenticity of the statement being tested person.

 
Fai said in, but with the continuous application of the traditional polygraph, its basis and the results have been questioned. That cheating is not unique physiological characteristics, it depends on the traditional polygraph physiological signals and the psychological state of being tested only weak links. Through self-suggestion and liars, all the lies the body that did not happen.

 
The beginning of the use of polygraph, lie detector test the role of those who believe too much, and scared his confession. But do not be intimidated by the tester when the device is there to help polygraph is difficult to clear. Some cases, the polygraph is indeed better than random guessing strong, but it is difficult to know why.

 
Road brain waves ten feet high
Was huge in the traditional polygraph, when questioned, some researchers began looking for other means of lie detection. Fai introduced in these new "lie detector" means, including measurement of brain waves, and the direct detection of magnetic resonance imaging of brain activity, as compared to the body, the brain can not so easily deceived by the so-called psychological implications.

 
According to reports, a few years ago the United States Temple University School of Medicine Brain Imaging Center, led a research team, Dr. 斯科特法罗尔 in the latest study found that telling the truth and lying in brain activity when there is a clear difference and lying takes more mental. Study reported that use of brain scanners to carry out brain scans, to more accurately determine whether a person is lying.

 
There are functional magnetic resonance imaging. The polygraph using high-resolution thermal imaging technology, scanning the face of those tested. Were measured by observing whether the flush around the eyes to determine whether measured in lying. And this scanner is the latest brain wave polygraph. It is the use of nuclear magnetic resonance, scanning the brains of those tested, and then were tested to determine the authenticity of the speech.