The Polygraph Instrument The polygraph instrument usually measures four to six physiological reactions recorded by three different medical instruments that are combined in one machine. Older polygraph machines were equipped with long strips of paper that moved slowly beneath pens that recorded the various physiological responses. Polygraph Pro Suite. The best instrument delivers the best results which is why we only offer polygraph solutions designed to medical grade standards. Introduced in 2003, the Polygraph Pro Suite has been a product of suggestion and collaboration between Limestone Technologies and polygraph examiners. Learn More 8 results for polygraph instruments Save polygraph instruments to get e-mail alerts and updates on your eBay Feed. Unfollow polygraph instruments to stop getting updates on your eBay Feed. Download Polygraph stock photos. Affordable and search from millions of royalty free images, photos and vectors. a polygraph, deceptograph, voice stress analyzer, psychological stress evaluator, or any other similar device (whether mechanical or electrical) that is used, or the results of which are used, for the purpose of rendering a diagnostic opinion regarding the honesty or dishonesty of an individual. The Grass 7D Polygraph machine was used by Macquarie University researchers in the 1980s and 90s for research into a learning process called Associative Learning, in which discrete ideas and precepts become linked to one another and associations are formed between stimuli and reactions. Personal one-on-one polygraph test preparation training given by Doug Williams using the newest computerized polygraph instrument. PERSONAL POLYGRAPH TEST PREPARATION TRAINING Get a practice test and one-on-one training from Doug Williams. This confidential polygraph test preparation training is a comprehensive, personal instruction consisting of these three elements; 1) Special training in an Introduced in 1979, the "Ultrascribe" is still Stoelti