What does the polygraph record?
Your polygraph test will be given using a Stoelting Computer Polygraph (CPS). CPS was developed by Dr. David Raskin, Ph.D. and Dr. John Kircher, Ph.D. at the University of Utah, Salt Lake City, Utah. During the polygraph test we will record your respiration, the ability of your skin to conduct electricity and cardio vascular activity.
(back to top) A standard polygraph records changes in blood pressure, pulse rate, pulse strength, galvanic skin reflex (sweat gland activity), and upper and lower breathing patterns. It does not matter if the subject is “nervous” during the testing process – that is to be expected. The polygraph records significant changes from the subject’s “norm” when specific questions are asked. A person intending deception to a particular question will activate his/her Sympathetic Nervous System as a “self defense” mechanism when that question is asked on the test. The SNS activation will cause recognizable changes in one or more of the physical responses.
