Lie detector test

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Lie detector test

MODEL RELEASED. Lie detector test. Man undergoing a lie detector, or polygraph, test. The polygraph is the metal machine in front of the examiner. It records changes in a number of physiological processes, as a series of questions are asked by the examiner. Around the subjects left arm is a cuff to measure blood pressure and around his chest are air-filled bands (pneumographs), which measure the movement of the chest with each breath. Pulse meters are also attached to the subjects fingers to measure heart rate. The examiner interprets the results to determine if the subject demonstrated deceptive behaviour. The reliability of polygraphs is controversial and their evidence is not admissible in court

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6419106

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Analog Behaviour Blood Pressure Crime Criminal Cuff Deception Detecting Detection Examination Fifties Graph Heart Rate Interrogation Lie Detector Listening Machine Measuring Of Deception Off Ice Physiological Physiological Measurement Physiology Polygraph Psychology Psychophysiological Detection Pulse Meter Respiration Talking Test Thirties Trace Traces Unproven Unreliable Writing Examiner Health Care Interrogation Room

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