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测谎技术是借助于生理、医疗仪器,动用生理学、电学、现代医学等相关知识,刺激被测者的心理及思维,根据所获得的图表数据,评断被测对象的陈述是否诚实的一门科学技术。测谎技术在一些发达国家很早就投入使用。我国于1992年研制成功了第一台测谎仪-PG-I型心理测试仪。在案件侦破中取得较好效果。测谎是测试嫌疑人说谎时紧张心理状态下的压力反应。即通过事先编制的问题,对嫌疑人提问,触发其心理反应,引起心理上的差异。具体方法是通过测量人体中最敏感、不易受大脑皮层控制而反映人的本能条件,反映心理矛盾和心理压力的指标——皮肤电阻、呼吸和脉搏。以这三项生理图谱对应率的高低所到达的标准来判别被测人与案件的关系。一、测谎技术在侦察破案中主要有以下几方面作用□甄别无辜、确定嫌疑使用仪器本身就给被测人心理造
Polygraph technology is based on the physiology, medical equipment, the use of physiology, electrical, modern medicine and other related knowledge to stimulate the subject’s psychological and thinking, according to the chart data obtained, to judge the subject’s statement is honest and a science technology. Polygraph technology has long been in use in some developed countries. China in 1992 successfully developed the first polygraph - PG-I-type psychological tester. In the detection of the case achieved good results. The polygraph is a stressful reaction that tests the nervous state of the suspect when lying. That is, through pre-prepared questions, questioning suspects, triggering their psychological reactions, causing psychological differences. The specific method is to measure people’s instinct by measuring the most sensitive and not easy to control the cerebral cortex, which reflects the psychological contradiction and psychological stress - skin resistance, respiration and pulse. The three physiologic maps correspond to the level of the standard reached to determine the relationship between the subject and the case. First, polygraph technology in reconnaissance and detection of the case mainly in the following aspects □ screening of innocent, to determine the suspect use of the instrument itself gave the measured people psychological