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 ?
Because one is limited in any polygraph examination as to the number of questions upon which a client is examined, the attorney should always be concerned whether a decision not to examine a client on a particular issue will convey a message that the attorney fears the results of the question not asked of the client.
In Wheeler, the NMCCA's analysis of when a trial defense counsel can use evidence of polygraph examinations taken during an accused's interrogation to attack the voluntariness of an accused's subsequent confession is especially valuable.
The opinion states that when the prosecution lays a foundation for a confession, it may offer evidence that the confession was voluntary, but may not mention a polygraph examination.
If experience with admitting polygraph evidence turns out to be positive, the justices might hope that legislatures would gradually accommodate polygraph examinations with the Rules of Evidence.
This sample permitted direct comparisons between two different methods of predicting future behavior: the applicant's admissions made during the preemployment polygraph examination regarding such incidents as the theft of money and merchandise from previous employers; and the applicant's attitude toward honesty as measured by a paper-and-pencil test.
Once trained NOMS polygraph examiners will be required to carry out polygraph examinations on the offenders who are assessed as high risk of harm and high risk of reoffending.
Such speed is possible because the employers usually do not require extensive background investigations, nor do they normally use polygraph examinations or other assessment tools essential to the law enforcement hiring process.
The employee should be advised that the company intends to ask him or her to submit to a polygraph examination to verify the completeness of written statements prior to making a decision on prosecution.
Those involving a polygraph examination usually occur between the second and third hours of the interrogation session.
THE POLYGRAPH EXAMINATION, once looked on as an accurate, time efficient, and cost-effective security management tool, has lapsed into functional obscurity with the passage of new congressional legislation.
Woodson received a higher sentence in part because, after pleading guilty in October 2006 and telling government agents he had fully disclosed his criminal activity, he failed a polygraph examination and only then admitted additional illegal conduct.
He has told me repeatedly that he is ready, willing and able to undergo a polygraph examination.