polygraph

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detector

 [de-tek´ter]
a device by which an object or condition can be discovered.
image detector any recording medium used in radiology, such as film or a cathode ray tube.
lie detector polygraph.

pol·y·graph

(pol'ē-graf),
1. An instrument to obtain simultaneous tracings from several different sources; for example, radial and jugular pulse, apex beat of the heart, phonocardiogram, electrocardiogram. The ECG is nearly always included for timing.
2. An instrument for recording changes in respiration, blood pressure, galvanic skin response, and other physiologic changes while the person is questioned about some matter or asked to give associations to relevant and irrelevant words; these physiologic changes are presumed to be indicators of emotional reactions, and thus whether the person is telling the truth. Synonym(s): lie detector
[poly- + G. graphō, to write]

polygraph

/poly·graph/ (pol´e-graf) an apparatus for simultaneously recording blood pressure, pulse, and respiration, and variations in electrical resistance of the skin; popularly known as a lie detector.

polygraph

(pŏl′ē-grăf′)
n.
An instrument that measures the physiological responses of an individual to questions from an examiner who interprets the results as indicating the likelihood that the individual is telling or not telling the truth in giving the answers.
tr.v. poly·graphed, poly·graphing, poly·graphs
To test (a criminal suspect, for example) with a polygraph.

po·lyg′ra·pher (pə-lĭg′rə-fər), po·lyg′ra·phist (-fĭst) n.
pol′y·graph′ic adj.

polygraph

[pol′ē·graf]
Etymology: Gk, polys + graphein, to write
an apparatus for simultaneously recording several mechanical or electrical impulses, such as blood pressure, pulse and respiration, and variations in electrical resistance of the skin; popularly known as lie detector.
Commonly called a lie detector. An instrument that measures and records a test subject’s sympathetic nervous system responses—pulse, blood pressure, galvanic skin conductance due to sweating, breathing rhythms, and temperature—to a series of questions, on the premise that true and false answers produce distinctive patterns of response.

polygraph

Lie detector A device designed to detect deception by evaluating physiologic responses to various spoken questions, measuring and recording changes in electrical and mechanical impulses in various parameters–eg, bp, respiratory rate, galvanic skin reflex

pol·y·graph

(pol'ē-graf)
1. An instrument for obtaining simultaneous tracings from several different sources (e.g., radial and jugular pulse, apex beat of the heart, phonocardiogram, electrocardiogram). The electrocardiogram is nearly always included for timing.
2. An instrument for recording changes in respiration, blood pressure, galvanic skin response, and other physiologic changes while the subject is interviewed or asked to give associations to relevant and irrelevant words; the physiologic changes are presumed to be emotional reactions, and thus indicative of whether the subject is telling the truth.
Synonym(s): lie detector.
[poly- + G. graphō, to write]

polygraph

An instrument that simultaneously records changes in various physiological parameter such as pulse rate, respiration rate, blood pressure and skin resistance changes from sweating. These sensitively reflect alterations in the emotions and the device is used to detect deception in answers to questions. A ‘lie detector’.

polygraph

an apparatus for simultaneously recording several mechanical or electrical impulses, such as blood pressure, pulse and respiration, and variations in electrical resistance of the skin.
References in periodicals archive ?
Eye tracking promises to cost substantially less, require one-fifth of the time currently needed for examinations, require no attachment to the subject being tested, be available in any language and be administered by technicians rather than qualified polygraph examiners.
The polygraph continues to track my vital statistics as the test continuesC*
We are members of the National Polygraph Association, the American Polygraph Association and the British and European Polygraph Association, working to their professional and ethical standards," he said.
Examples of the types of issues that are appropriate for a polygraph examination in the securities context are 1) whether the purchase of a specific security was authorized; 2) whether the sale of a specific security was authorized; 3) whether the broker represented that a specific investment had no risk; or 4) whether the broker explained the difference between mutual fund "A" shares and "B" shares.
In 1984, psychologist David Lykken, who published many articles in peer-reviewed journals about the polygraph, addressed a conference of the American Association for the Advancement of Science about the so-called lie detector.
For decades, the polygraph was a trusted tool of justice, treasured by beat cops and internal affairs investigators alike, celebrated across popular culture as an unerring arbiter of honesty and public virtue, used to test patients in psychiatric hospitals and job applicants in corporate interviews, and entrusted with some of the most valued secrets of the atomic age, the twitchy mechanical conscience of the cold war era.
Technique refinement for standard issue polygraphs will elicit involuntary non-verbal physiological responses.
64) Additionally, it is not scientifically valid to extrapolate the error rates of laboratory studies to polygraphs administered in real-life situations.
The polygraphs measured their physical responses, including heart rate, to see if they were lying and help build up a clearer picture of their progress on treatment programmes
Tour de France winner Floyd Landis had an opportunity to take a polygraph test with John Grogan, who owns a polygraph business in Woodland Hills, on ``The Adam Carolla Radio Show'' on Tuesday morning.
Doubts over the accuracy of polygraphs mean they cannot currently be used by Gardai and are not accepted as evidence in the courts.
POLYGRAPHS, or lie-detector tests, have been around in some form since the late 1800s.