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lie detector |
Also found in: Dictionary/thesaurus, Encyclopedia, Hutchinson | 0.01 sec. |
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detector /de·tec·tor/ (de-tek´ter) an instrument or apparatus for revealing the presence of something. lie detector polygraph.
lie detector Etymology: AS, leogan, untruth; L, detegere, to uncover an electronic device or instrument used to detect lying or anxiety in regard to specific questions. A commonly used lie detector is the polygraph recorder that senses and records pulse, respiratory rate, blood pressure, and perspiration. Some experts hold that certain patterns indicate the presence of anxiety, guilt, or fear-emotions that are likely to occur when the subject is lying. lie detector Psychology A device that detects chest and abdominal movement during respiration, heart rate, BP, and galvanic skin conductance due to sweating. See Polygraph test. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Polygraphs are truth detectors, not just lie detectors. WIZARDS OF DETECTION Other researchers, however, present evidence that highly skilled human lie detectors do exist. There are fingerprint scanners, iris scanners, and even brainwave scanners somewhere in the pipeline, which can be hooked up to sophisticated databases or lie detectors as the case may be. |
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