What is a polygraph/polygraph test?

Polygraph, better known in the West as polygraph, is widely known as a lie detector. It's worth finding out how this device works and whether it's really capable of determining with complete certainty whether someone is lying. What is a polygraph and what information does it collect about the person being examined?How does the polygraph work?
A polygraph is a device that registers and measures the psychophysiological reactions of the human body to traces of emotional memory activated by external stimuli. During a test, for example, conducted only by the method of comparison zones recognized by the courts, the person conducting the test uses tests containing, among other things, control and critical (relevant) questions, and through records and calculations, the machine analyzes which of them caused the strongest reactions of the tested organism.The researcher's experience shows that the accuracy of the polygraph test results obtained by the device is almost 100 percent. The polygraph accurately indicates which of the relevant questions caused the subject to have a psychophysiological reaction stronger than to the control questions. However, it is worth remembering that mainly due to the human factor, the specialist issuing the conclusion based on the test will not always say with full confidence whether this person is lying. It is estimated that the probability of such confidence is about 80 percent. Based on this, taking into account all kinds of possible interference and artifacts, including those caused by the subject, he will diagnose whether the subject was plausible or was lying.How does the human body behave during a lie?
Lying affects a number of psychophysiological processes in the human body. It causes a state of general arousal in a person. A number of strong emotions arise, such as fear of being exposed, guilt, and on the other hand, excitement and satisfaction that you have managed to deceive someone. A polygraph can show the symptoms of these sensations .What psychophysiological reactions does the polygraph register and evaluate during the examination?
The computer polygraph automatically calculates the results, the so-called objective method. During a polygraph test, when calculating the results using this method, the device pays attention to three key symptoms. This:Galvanic skin reaction, i.e. measurement of the electrical conductivity of the skin. In stressful or fear-inducing situations, a person sweats, which increases the electrical conductivity of the skin. This variable is measured by silver sensors placed on the fingertips in special bands.
The results of this item are considered twice as important as the rest.
Pulse and blood pressure, when the body reacts more strongly, distinguish between heart rate and pressure.
Respiratory rate is measured by pneumographs placed on the chest and abdomen at the diaphragm level.
Experienced specialists in the process of manual analysis also use a plethysmograph, which measures with a mini camera the degree of narrowing of the capillary vessels at the fingertips, where arterial blood passes into venous. At the same time, in the overall assessment, the results of the galvanic skin reaction are not multiplied by two.Optionally and interchangeably, skin resistance sensors (reverse conduction and voice sensors recorded by mini microphones) are also used in the analysis. Каталог премиум-досуга: эскорт, эскорт услуги и эскортницы без фейков. Подбор типажей, выезд по районам, конфиденциальность https://red-models.net/ В каталоге — элитные проститутки и топ эскортницы для деловых встреч и светских мероприятий. Чёткие условия, честные анкеты, быстрый выбор.