polygraph

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polygraph

an instrument for the simultaneous electrical or mechanical recording of several involuntary physiological activities, including blood pressure, skin resistivity, pulse rate, respiration, and sweating, used esp as a would-be lie detector

Polygraph

 

a multichanneled oscillograph for simultaneously recording readings of several physiological functions, such as respiration, blood pressure, brain and muscle bioelectricity, and motor reactions. The most common type is the general-purpose polygraph, a multichanneled oscillograph that records with ink various bioelectric and nonelectric processes by means of appropriate biological sensors and adapters. The polygraph is used in physiological experiments to investigate interacting and interdependent bodily functions; it is also used in clinical diagnosis.

polygraph

[′päl·i‚graf]
(engineering)
References in periodicals archive ?
(1976), Validity and Reliability of Polygraph Examinations of Criminal Suspects (Contract No.
In contrast, on information and belief, Defendant [3] was not required to take a polygraph examination.
Just as your client is not required to sit for a deposition, the client should also not be required to indulge opposing counsel with their presence at a polygraph examination.
The prosecution opposed the defense motion in limine, arguing that MRE 707 prohibited the introduction of any evidence from a polygraph examination. (102) Specifically, the trial counsel pointed to the plain language of MRE 707(a), which states: "[n]otwithstanding any other provision of law, the results of a polygraph examination, the opinion of the polygraph examiner, or any reference to an offer to take, failure to take, or taking of a polygraph examination, shall not be admitted into evidence." (103) While the trial counsel conceded that SH1 Wheeler had "a right to discuss the circumstances of an interrogation," he maintained that MRE 707 prohibited any reference to the polygraph examination itself.
1986) (evidence of defendant's failure of polygraph examination admissible to explain why police did not conduct more thorough investigation).
The polygraph examination had a 92% accuracy rate in deceptive subjects and a 70% accuracy rate in truthful subjects.
Travis, the court found that, although the defendant's agreement to a condition of probation requiring him to submit to a polygraph examination did not establish the admissibility of the results, it could still be used as grounds for the revocation of parole because he was uncooperative and resisted supervision.
The Court noted that between 1981 and 1997, the Department of Defense (DOD) conducted more than 400,000 polygraph examinations. Justice John Paul Stevens in a dissenting opinion supported its use by DOD, because, he said, its polygraph examiners were trained at its own Polygraph Institute, "which is generally considered the best training facility for polygraph examiners in the United States." The Supreme Court's opinion has put to rest any argument against the continued use of this technique as a tool in national security investigations.
To evaluate the applicability of the guilty knowledge technique, 758 polygraph examination cases were surveyed for operable case facts (keys).
government also consulted Parisoula Lampsos, who the Defense Department believes has passed a polygraph examination in support of her claim that she was Saddam's mistress in Iraq for many years.
Scheffer,(1) the Supreme Court, by an 8-to-1 margin, upheld a Military Rule of Evidence that prohibits reception of polygraph evidence.(2) The defendant challenged the rule on Sixth Amendment and due process grounds when the trial court refused to admit proof of an exculpatory polygraph examination administered by a government examiner at the government's request.(3)
If the court finds that the issue turns on credibility, the court should inquire whether either party is willing to supplement the record with a polygraph examination of the party's witness or witnesses.