polygraph

polygraph
1. An instrument to obtain simultaneous tracings from several different sources; e.g., 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; the physiologic changes are presumed to be indicators of emotional reactions, and thus whether the person is telling the truth. SYN: lie detector. [poly- + G. grapho, to write]
- Mackenzie p. an instrument consisting of a system of tambours and a time-marker for recording simultaneously the jugular and arterial pulses and the apex beat; formerly used in the clinical investigation of cardiac arrhythmias.

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poly·graph 'päl-i-.graf n an instrument for simultaneously recording variations of several different pulsations (as of the pulse, blood pressure, and respiration) see LIE DETECTOR
poly·graph·ic .päl-i-'graf-ik adj
poly·graph·i·cal·ly -i-k(ə-)lē adv

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poly·graph (polґe-graf) [poly- + -graph] an instrument for simultaneously recording various physiological responses as represented by mechanical or electrical impulses, such as respiratory movements, pulse wave, blood pressure, and galvanic skin responses. Such phenomena reflect emotional reactions which are of use in detecting deception. Popularly known as lie detector.

Medical dictionary. 2011.

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  • polygraph — poly·graph / pä lē ˌgraf/ n: an instrument that records physiological pulsations; esp: lie detector poly·graph·ic /ˌpä lē gra fik/ adj Merriam Webster’s Dictionary of Law. Merriam Webster. 1996 …   Law dictionary

  • Polygraph — Pol y*graph, n. [Gr. ? writing much; poly s much, many + ? to write: cf. F. polygraphe.] 1. An instrument for multiplying copies of a writing; a manifold writer; a copying machine. [1913 Webster] 2. In bibliography, a collection of different… …   The Collaborative International Dictionary of English

  • Polygraph — (v. gr.), 1) Vielschreiber, Verfasser zahlreicher Werke, gewöhnlich in tadelndem Sinne; 2) s. u. Kopirmaschine 1) b) Daher Polygraphie, 1) Vielschreiberei; 2) Schrift, deren sich nicht blos eine bestimmte Sprache, sondern auch viele andere… …   Pierer's Universal-Lexikon

  • Polygraph — (griech.), Vielschreiber; auch eineeigenartig konstruierte Kopiermaschine …   Meyers Großes Konversations-Lexikon

  • Polygraph — Polygrāph (grch.), Vielschreiber; Kopiermaschine …   Kleines Konversations-Lexikon

  • Polygraph — Polygraph, ein Vielschreiber, und in diesem Sinne oft tadelnd gebraucht, im Allgemeinen aber, jeder Autor, der Viel über Vieles schreibt …   Damen Conversations Lexikon

  • polygraph — (n.) 1794, mechanical device for making multiple copies of something written or drawn, from Gk. polygraphos writing much, from polys much (see POLY (Cf. poly )) + graphos writing, from graphein to write (see GRAPHY (Cf. graphy)). Meaning instru …   Etymology dictionary

  • polygraph — ► NOUN ▪ a machine for recording changes in a person s physiological characteristics, such as pulse and breathing rates, used especially as a lie detector …   English terms dictionary

  • polygraph — [päl′i graf΄] n. [Gr polygraphos, writing much: see POLY & GRAPH] 1. an early device for reproducing writings or drawings 2. an instrument for recording simultaneously changes in blood pressure, respiration, pulse rate, etc.: see LIE DETECTOR… …   English World dictionary

  • Polygraph — This article is about the forensic instrument. For the automatic signing instrument, see Autopen. For the dual pen device that produces a simultaneous copy of an original while it is written in cursive writing, see Polygraph (duplicating device) …   Wikipedia

  • Polygraph — Ein Polygraph ist: ein Lügendetektor Polygraf, ein Beruf im Druckwesen Polygraph (Zeichnen), ein Zeichenhilfmittel Jefferson Polygraph, ein Vorläufer des Kopiergeräts das Kombinat Polygraph Werner Lamberz, ein ehemaliges Industriekombinat in… …   Deutsch Wikipedia

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