Lie detectors tell the truth 80-90% of the time. it was not until 1914 and 1915 when the first lie detector came out and that was many years ago so they would have innovated it to make it more reliable.Lie detectors work by measuring breathing, pulse, and galvanic skin response.
Lie detector is basicly the sidekick of the twenty first century. Lie detectors tell the truth 80-90% of the time. It was not until 1914 and 1915 when the first lie detector came out. That was many years ago so they would have innovated it to make it more reliable. Lie detectors work by measuring breathing, pulse, and galvanic skin response.
Two pneumographs are around the chest. When the chest …show more content…
This cuff has a tube from one end is connected to the cuff and the other is connected to the polygraph.There should be a sound when the arm. To make the pen moves there need to be pressure from the sound. When the pen moves this is what catches the results. Most people blood pressure will start to rise up when the lie. As most get nervous they sweat so that is another way for a lie detector to measure if they are lying or not. Galvanic skin response is also called electrodermal activity. Basically this is that they measure the sweat on your skin. Your fingertips are the best place to look for sweat. Most people start to sweat when under a stressful moment. There are two finger plates attached to the patient two fingers and this is called Galvanometers. The Galvanometers conducts electricity especially when the finger is wet with sweat. Breathing ,blood pressure,and galvanic skin response are way to tell whether someone is lying or not through a polygraph.To tell whether someone is lying they would breathe heavily and deeply. When people get nervous ther blood pressure gets high so this is another way to tell whether you are lying or not. A Lot of people get scared and start to sweat when under all the pressure.A polygraph would detect that and tells whether you're