An instrument for detecting deceptive statements by a subject, by measuring several physiological states of the subject, such as pulse, heartbeat, and sweating. The instrument records these parameters on a strip of paper while the subject is asked questions designed to elicit emotional responses when the subject tries to deceive the interrogator. Also called lie detector
Sometimes called a "lie detector," the polygraph can only detect signs of physiological stress; whether one is lying is an interpretation made by the polygraph examiner.
A device that measures simultaneously several physiological responses that accompany emotion; for instance, heart and respiration rate, and blood pressure. It is commonly known as a "lie detector" because of its use in determining the guilt of a subject through responses while he or she answers. It is commonly used in sleep research to monitor EEG, EOG, and EMG readings of a subject.
a machine that measures people's physiological responses (e.g., their heart rate); when these machines are used in lie detection, polygraph operators attempt to tell if someone is lying by observing how that person responds physiologically while answering questions
a medical instrument that records several physiological processes simultaneously (e.g., pulse rate and blood pressure and respiration and perspiration)
a "body reaction measurement", not a lie detector
a diagnostic instrument capable of producing a continuous record of physiological changes occurring in the human body
a machine that measure's people's physiological responses (e
an instrument that records certain physiological changes in a person undergoing questioning in an effort to obtain truth or deception
an instrument that simultaneously records changes in physiological processes such as heartbeat, blood pressure, respiration and electrical resistance (galvanic
a system, which can detect a person's state of excitement, stress or emotional conflict according to pre-defined criteria
A mechanical instrument that records physiological arousal from multiple channels; it is often used as a lie-detector test.
The term literally means "many writings," which refers to the manner in which selected physiological activities are simultaneously recorded. Polygraphs records respiration, cardiovascular activity and electro dermal activity of an examinee while an examiner questions the examinee. The instrument itself is a combination of several recording devices routinely used in the medical and scientific community.
A lie-detector machine. It works by recording variations in blood pressure, body temperature and respiration of a subject as he answers questions.
A lie-detector machine which records even the slightest variation in blood pressure, body temperature and respiration as questions are put to, and answers elicited from a subject.
A device that measures simultaneously several physiological responses that accompany emotion; for instance, heart and respiration rate, blood pressure, and GSR. Commonly known as a 'lie detector' because of its use in determining the guilt of a subject through responses while he or she answers questions. See also GSR, voice stress analyzer.
