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 ?
Often, examiners had to pull information from emails, telephone conversations and military orders to create the proper justification for an employee's polygraph.
The force was one of the first to try out polygraphs to keep tabs on offenders in a pilot scheme.
The polygraph tests the subject's breathing pattern, heart rate, blood pressure, and sweat gland activity
The Navy's Insider Threat Analytic Hub will serve as DON's insider threat analytic and response center that gathers, integrates, reviews, assesses, reports, and responds to key information derived from continuous evaluation, mission partners, user activity monitoring, polygraph programs, law enforcement and other sources.
Kavanaugh said he'd be willing to do whatever the Judiciary Committee wanted, but added that polygraphs can't be used in federal court because "they're not reliable."
Kalinak took the test at a private polygraph expert, the same that opposition MP Igor Matovic visited during one of his disputes with former prime minister Robert Fico.
Western governments do not rely on polygraph tests!Ms Maryanne Njihia, a psychologist at Hekima Counselling Services in Nairobi, says the metrics tested by polygraph machines can vary because they focus on body functions that can be as a result of other underlying issues which are unrelated to the issue at hand.Moreover, theres no evidence that any pattern of physiological reactions is unique to deceptions, she adds.
Those who fail the polygraph, even those who pass, go through voice analysis that picks up stresses and intonations as you talk.
According to a report, suspicions against Qavi have augmented after the polygraph test whereas some immoral videos, found in Qavi's mobile, have also been detected and deleted.
Summary: New Delhi [India], July 26 (ANI): A Delhi Court on Wednesday ordered that a witness in the 1984 anti-Sikh riots case, Abhishek Verma, shall be provided 24-hour security till he undergoes a polygraph (lie detector) test.
But Aspin then gave a signed letter to the ECHO, in which he wrote: "l have passed a stringent polygraph test where the results showed that I was truthful when I denied the offences for which I now stand convicted and sentenced.
Gordon presents readers with a comprehensive guide to the history of the polygraph, polygraph testing, questioning techniques, and the use of the machine in a variety of investigation types and contexts.