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	Podcast:		BrainStuff
	Episode:		How Polygraph Machines Work
	Category:		Science & Medicine
	Duration:		00:02:04
	Publish Date:		2008-12-03 18:00:00
	Description:		Also known as 'lie detectors,' polygraphs are used to record an individual's vital signs, such as breathing rate, pulse, and so forth. Check out this podcast from HowStuffWorks to learn more about polygraphs and the art of lie detection. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.
	Total Play:		0