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

(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.
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’.
References in periodicals archive ?
The polygraph tests the subject's breathing pattern, heart rate, blood pressure, and sweat gland activity
Dont get nabbed in Uhuru Gov Procurement Sting operation, janjaruka my fren, he tweeted on Monday.However, it emerges that some private companies have been using polygraph tests on employees, and in 2015, a Labour Court judge said the results of such test would be sufficient grounds for dismissal.
Polygraph tests - otherwise known as lie detectors - are not accepted by UK courts because their accuracy has never been proven.
Some courts argued that the reliability and accuracy of polygraph evidence can be probative enough when the both parties agree to taking a polygraph test, e.g.
Polygraph tests will be used in conjunction with eye detection by the Northumbria and Durham forces Philip Coburn
Wessman denied the accusation, but the manager insisted that Wessman sit for a polygraph test, Wessman said in her lawsuit.
"So on April 7 I went to Melbourne and went through the process of a polygraph test.
Arad reportedly passed an initial polygraph test, but subsequent inquiry by Israel's domestic security service Shin Bet concluded he was the source of the leak, which he later admitted.
On Monday, the minister stated that a DANS employee has failed a polygraph test designed to figure out whether he had anything to do with the recent leaks of classified information.
Since then scientists have been pushing hard to come up with a viable alternative for a polygraph test, which at times is rendered useless i n revealing concealed information from terrorism suspects .
Middleton also pointed out that no one can be made to take a polygraph test in their arena--if an individual does not sign the consent form, the examiner will not conduct the test, "and no adverse action can be taken against them based solely on their refusal to take a polygraph exam."