![]() ![]() Since 1730, research has begun on the invention of a device that can detect lies. In general, the oldness of polygraph goes back to more than 300 years. In addition to the non-rationality of this method, it should be noted that even the innocent confessed to sin after long and painful torture. The Roman and Greek Empires usually used this method. ![]() In the trial by torture, the suspect is tortured in different ways. They believed that God will save the innocent. In this case, two people fought each other until one of them was killed. The criterion of trial by combat was physical strength. However, these methods were not reliable and scientific. As time passed and with the community development, people relied on the lie test on pure chance. Like the first one, if the individual would walk on red hot stones and his feet did not burn, he was not a liar. If his hand did not burn, he was a truthful person.Īnother irrational old and superstitious example is “ordeal of the red hot stones” test. In this test, the individual would put his hand in a bowl of boiling water. For instance, one method was the “ordeal of boiling water” test. In fact, a trial was held by combat, ordeal, or torture.įor this purpose, during the 18th-century people tried to invent methods. Simply put, they used three general methods. Despite the initiative, each material was relying on religious faith and superstition. But many of these were foolish, unreasonable and brutal. They used different inventive materials for confirmation of truth over the centuries. Mankind has found many methods to distinguish truthfulness from deception. In the history of civilization, there have been futile or incomplete attempts to discover lies and to confirm the truth. Go to Polygraph School > The history of polygraph These tensions included changing in heart rate, feelings of anxiety or nervousness, person’s signals and other more which prove to lie. Polygraphs are based on this theory that people who lie or deceive, show physiological evidence of the tension. Notwithstanding the colloquial term, the polygraph does not recognize lies. ![]() Polygraph or lie detector utilizes mostly in law enforcement agencies and police investigations in order to examine deceptive reactions of individuals. For the first time in 1921, it was used as a lie detector. Therefore, the etymology of the polygraph originated from polys “much, many” and “Graphos” writing.īut as a term, the polygraph is a device to record the alternations of distinct pulsations simultaneously. The word polygraph is literally derived from the Greek word “Polygraphos” meaning writing much. In the end, you will get familiar with the polygraph usage in different agencies and the benefits of using it. Then, it talks about the creation of polygraph idea and the theory. After a brief explanation of the title, the article will explain about the concise history of the polygraph. Specialized training requires 12 to 24 months.A Brief Introduction to Polygraph: This article will describe the etymology, word formation and definition of the polygraph to the readers. The minimum educational requirement for electrocardiograph technicians is high school graduation or its equivalent, along with supervised on-the-job training, usually lasting eight to 16 weeks. Students intending to pursue a career as an electrocardiograph technician should take challenging high school courses in science, math, and computer technology. How do I become an electrocardiograph technician? How much does an electrocardiograph technician earn? Schedule appointments, maintain patients’ files and send bills. Monitor special, three-dimensional tracings of the heart's electrical activity. Record heart activity during physical exercise. Record heart murmurs and other abnormal sounds. Use procedures to test the lungs and heart. Its condition with the aid of a television monitor. Insert a catheter (tube) into a blood vessel leading to the heart to examine. Monitor special EKGs that record heart action over 12- to 24-hour periods. With additional on-the-job training and experience, EKG technicians may move to positions that perform some or all of the following: Recognize emergencies and assist the responding physician. Instruct patients to perform physical exercise as specified by the physician. What might an electrocardiograph technician do in a workday?Ĭonnect electrodes to leads from the EKG machine. Physicians use the graph (electrocardiogram/EKG/ECG) to diagnose and monitor patients’ heart problems. What does an electrocardiograph technician do?Įlectrocardiograph (EKG or ECG) technicians operate equipment that measures, monitors, and graphically traces the electrical activity of the heart. ![]()
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