Lie Detectors The Nature of Things : Season 3 Episode 8

This program examines the autonomic nervous system, how it works, and what it can reveal. Dr. John Rich, a psychiatrist with Toronto and Queen's Universities is host. In police interrogations and other situations, many methods are used to determine if a subject is lying. One the more efficient methods is the monitoring of the autonomous nervous system. Under certain types of stress, respiration, perspiration, circulation and many other functions are affected.