测谎仪(英文名称L i eDetector),即“多参量心理测试仪”,是综合心理学、生理学和现代电子学以及其它应用科学技术设计而成的。其工作的基本原理是:人在说谎时,会引起一系列的生理变化(如血压、呼吸、脑电波、声音、瞳孔、皮肤电等),这些变化一般只受植物神经系统的制约,而不受 Polygraph (L etetector English name), that is, “multi-parameter psychological tester”, is a comprehensive psychology, physiology and modern electronics and other applied science and technology designed from. The basic principle of his work is that when people lie, they cause a series of physiological changes (such as blood pressure, respiration, brain waves, sound, pupils, skin electricity, etc.). These changes are generally restricted only by the autonomic nervous system By